C语言程序设计报告歌曲信息管理系统.docx
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C语言程序设计报告歌曲信息管理系统
《高级语言程序设计》课程设计
说明书
设计题目:
歌曲信息管理系统设计
1、设计题目3
2、主函数4
3、输入模块4
4、删除模块5
5、浏览模块6
6、查找模块6
7、各被调函数7
8设计小结8
9、源程序代码8
1、需求分析:
用文件存储信息,因而要提供文件的输入输出操作;可对歌曲信息进行输入、删除、浏览,因而要提供文件的输入、删除和信息显示操作;查询歌曲信息要提供查找操作;实现按作者分组显示功能则要提供排序功能;另外要提供键盘式选择菜单以实现功能选择。
2、总体设计:
整个管理系统可以被设计为数据输入模块、数据删除模块、信息浏览模块、信息查询模块和信息分组显示模块。
3、详细设计
数据结构采用结构体,建立歌曲信息结构体:
StructSongInfo
{Charname[20];//歌曲名
Charpub_date[6];//发行年月(yyyymm)
}SI;
(1)数据输入模块把歌曲信息写入文件。
(2)数据删除模块采用基本的查找算法,查找歌曲信息文件,如果是要删除的歌曲,
则舍弃改信息。
否则重新写入文件。
(3)信息浏览模块读歌曲信息文件,显示输出。
(4)信息查询模块通过菜单选择查询字段:
歌曲名作者演唱者。
然后采用基本查找
算法在歌曲信息文件中查找,如果找到,则输出;否则输出对不起,没有您要找的歌曲信
息!
。
”
选择按作者分组显示歌曲信息,用fread或fscanf把歌曲信息
变量中(临时变量数据结构可以采用歌曲信息结构体数组),采
一:
详细设计
1主函数
主函数的设计提供数据输入、数据处理和数据输出以及各种函数的调用其中各功能模块用菜单方式选择;另外,部分菜单也可以写成函数。
[程序]
voidmain()
{
voidmenu();
voidfunction1();
voidfunction2();
voidfunction3();
voidfunction4();
menu();
return;
}
2各功能模块设计
(1)输入模块
信息输入时直接按顺序结构(如图2)输入:
voidinput()
{charch;
n=0;
if((fp=fopen("song.txt","a"))==NULL)
printf("can'topenfilesong.txt");
exit(0);
printf("Pleaseinputarecord:
");for(n=0;n<=50;)
printf("\nrecord%d:
\n歌名:
",n+1);gets(song[n].name);
printf("\n时间:
");
gets(song[n].year);
printf("\n作者:
gets(song[n[.author);
printf("\n歌手:
gets(song[n].singer);
n++;
printf("继续输入吗?
(y/n)\n");
ch=getchar();getchar();
if(ch=='n')
break;
fwrite(song,sizeof(song[0]),n,fp);fclose(fp);
2删除模块:
用户输入要删除的信息,如输入歌曲名,根据歌曲名找到其他记录并删除
[程序]voiddel()
intm,k=0;
longa;
charnamekey[8];
printf("\n请输入您要删除的歌曲名:
scanf("%s",namekey);
if((fp=fopen("song.txt","叶"))==NULL)
printf("\n不能打开该文件!
while(!
feof(fp))
a=ftell(fp);
fscanf(fp,"%6s%5s%5s%10s\n",song[n].name’song[n].year,song[n].author,song[n].singer);
if(strcmp(namekey,song[n].name)==0)
k=1;
if(k==1)
printf("\n已查到,记录为");
printf("\n%6s%5s%5s%10s\n",song[n].name’song[n].year,song[n].author,song[n].singer);
printf("\n确实要删除,按1;不删除,按0:
scanf("%d",&m);
if(m==1)
fseek(fp,a,0);
fprintf(fp,"%s%s%s%s\n","","","","");
else
printf("\n对不起,查无此人。
fclose(fp);
3•浏览模块:
在用户按下菜单后直接显示出所有歌曲信息。
voidxianshi()
{n=0;
if((fp=fopen("song.txt","rb"))==NULL)
printf("can'topenthefilesong.txt");
printf("歌名\t作者\t歌手时间\n");
while(fread(&song[n],sizeof(song[n]),1,fp)==1)
printf("%6s%5s%10s%5s\n",song[n].name’song[n].author,song[n].singer,song[n].
year);
}fclose(fp);
4•查找模块:
voidsearchname()
用户输入要查找的歌曲名或歌曲的任意信息,按菜单键。
inta=0;charch;n=0;
printf("cannotopenthefile.\n");exit(0);
a=n;
printf("用什么方式查询?
\n");
printf("1.歌名2.时间3.歌手\n");
switch(ch)
case'1':
printf("输入你要查的歌名:
gets(numstr);
for(n=0;n{if(!strcmp(numstr,song[n].name))break;n++;}break;case2:printf("输入你要查的歌曲时间\n");gets(numstr);for(n=0;n{if(atol(numstr)==song[n].year)break;n++;}break;case3:printf("输入你要查的歌手\n");gets(numstr);for(n=0;n{if(!strcmp(numstr,song[n].singer))break;n++;}break;}printf("歌名作者歌手时间\n");printf("%6s%5s%5s%10s\n",song[n].name’song[n].year,song[n].author,song[n].singer);fclose(fp);}6各种被调函数(1)insert函数:数据的插入,用于个人的信息的补录,包括姓名、工作单位、电话号码和email地址。(2)del函数:用于通讯录中个人信息的删除。(3)change函数:用于通讯录中个人信息的修改,输入人名,对人名所对应的机构体内容进行修改(包括姓名、工作单位、电话号码和emaiI信息)。(4)searchname函数:用于输入姓名查找个人信息。如果通讯录中没有此人信息,显示“查无此人!”(5)searchnum函数:用于输入电话号码查询个人信息。如果通讯录中没此人信息,显示“查无此人!”(6)show函数:用于个人全部信息的显示。(7)income函数:用于所有原始个人信息的录入(包括姓名、电话号码、工作单位和email地址)。设计小结:本程序大体参考与网上信息,说实话,这程序我无法完成,但又必须做,即使不会或者做不完美,但是也要尽力去做,做这个程序是要我们能够使用所学的内容,这次设计,让我重新掌握了C语言,而且还得到了用C语言解决实际问题的宝贵经验,也从中学到了很多东西。让我懂得了做什么事都要有耐心,要有对什么事都认真仔细的品质,让我学会了很多以前不懂的东西,使我更加意识到实践的重要性!三:原程序#include#include#include#includevstring.h>inti=0;structsystem{charauthor[20];charsinger[20];chartime[20];charname[20];}dan[100];voidenter(){intj;charc[2];FILE*fp;if((fp二fopen("data.txt","w"))==NULL){printf("Cannotopenthefile!\n");exit(0);}for(j=0;jvi;j++)fwrite(&dan[j],sizeof(structsystem),1,fp);}while(1){printf("Pleaseinputtheauthor:'n");scanf("%s",dan[i].author);printf("Pleaseinputthesong'sname:\n");scanf("%s",dan[i].name);printf("Pleaseinputthesinger:\n");scanf("%s",dan[i].singer);printf("Pleaseinputtheoutday:\n");scanf("%s",dan[i].time);if(fwrite(&dan[i++],sizeof(structsystem),1,fp)!=1)printf("Filewriteerror'n");elseprintf("Successful!\n");printf("Isthereanymore?(Yes[y]/No[n])\n");scanf("%s",c);if(strcmp(c,"n")==0)break;}fclose(fp);voiddelete(){intj,v,c;charw[20];FILE*fp;printf("Pleaseinputthesong'namewhichyouwanttodelete:");scanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;}v=j;for(j=0;j{if(strcmp(w,dan[j].name)==0)c=j;fclose(fp);fp二fopen("data.txt","wb");for(j=0;j{if(j!=c)fwrite(&dan[j],sizeof(structsystem),1,fp);}fclose(fp);printf("DeleteOK!\n");i--;}voidbrowse(){intj;FILE*fp;fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)==1)printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf(”\n");}elsebreak;}fclose(fp);}voidsearch(){intflag,j,x;charw[20];FILE*fp;charv[20];printf("(1)Byauthor\n");printf("(2)Bysinger\n");printf("(3)Byname\n");printf("Pleasechoosewhichyouwanttosearch:\n");scanf("%d",&x);if(x==3){flag=O;printf("Pleaseinputthesong'sname:");scanf("%s",&w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].name,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;}}if(flag==0)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==2){flag=0;printf("Pleaseinputthesinger:");scanf("%s",&v);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].singer,v)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==1){flag=0;printf("Pleaseinputtheauthor:");seanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(struetsystem),1,fp)!=1)break;if(stremp(dan[j].author,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseprintf("Error!\n");}main(){inta;while(1){flea\n");printf("\t\tWelcometothesong'system!by******************printf("\t\t******************AoAMENU*\n\n"); printf("\t\t\t(1).Enter\n”);printf("\t\t\t(2).Delete\n”);printf("\t\t\t(3).Browse\n");printf("\t\t\t(4).Search'n");printf("\t\t\t(0).exit\n");printf("\t\t*************************************************\n");printf("\n\t\t\tPleasechoosethenumber(0-4):");seanf("%d",&a);if(a==0)break;switeh(a){ease1:enter();break;ease2:delete();break;ease3:browse();break;ease4:seareh();break;}}}
if(!
strcmp(numstr,song[n].name))break;
case2:
printf("输入你要查的歌曲时间\n");
for(n=0;n{if(atol(numstr)==song[n].year)break;n++;}break;case3:printf("输入你要查的歌手\n");gets(numstr);for(n=0;n{if(!strcmp(numstr,song[n].singer))break;n++;}break;}printf("歌名作者歌手时间\n");printf("%6s%5s%5s%10s\n",song[n].name’song[n].year,song[n].author,song[n].singer);fclose(fp);}6各种被调函数(1)insert函数:数据的插入,用于个人的信息的补录,包括姓名、工作单位、电话号码和email地址。(2)del函数:用于通讯录中个人信息的删除。(3)change函数:用于通讯录中个人信息的修改,输入人名,对人名所对应的机构体内容进行修改(包括姓名、工作单位、电话号码和emaiI信息)。(4)searchname函数:用于输入姓名查找个人信息。如果通讯录中没有此人信息,显示“查无此人!”(5)searchnum函数:用于输入电话号码查询个人信息。如果通讯录中没此人信息,显示“查无此人!”(6)show函数:用于个人全部信息的显示。(7)income函数:用于所有原始个人信息的录入(包括姓名、电话号码、工作单位和email地址)。设计小结:本程序大体参考与网上信息,说实话,这程序我无法完成,但又必须做,即使不会或者做不完美,但是也要尽力去做,做这个程序是要我们能够使用所学的内容,这次设计,让我重新掌握了C语言,而且还得到了用C语言解决实际问题的宝贵经验,也从中学到了很多东西。让我懂得了做什么事都要有耐心,要有对什么事都认真仔细的品质,让我学会了很多以前不懂的东西,使我更加意识到实践的重要性!三:原程序#include#include#include#includevstring.h>inti=0;structsystem{charauthor[20];charsinger[20];chartime[20];charname[20];}dan[100];voidenter(){intj;charc[2];FILE*fp;if((fp二fopen("data.txt","w"))==NULL){printf("Cannotopenthefile!\n");exit(0);}for(j=0;jvi;j++)fwrite(&dan[j],sizeof(structsystem),1,fp);}while(1){printf("Pleaseinputtheauthor:'n");scanf("%s",dan[i].author);printf("Pleaseinputthesong'sname:\n");scanf("%s",dan[i].name);printf("Pleaseinputthesinger:\n");scanf("%s",dan[i].singer);printf("Pleaseinputtheoutday:\n");scanf("%s",dan[i].time);if(fwrite(&dan[i++],sizeof(structsystem),1,fp)!=1)printf("Filewriteerror'n");elseprintf("Successful!\n");printf("Isthereanymore?(Yes[y]/No[n])\n");scanf("%s",c);if(strcmp(c,"n")==0)break;}fclose(fp);voiddelete(){intj,v,c;charw[20];FILE*fp;printf("Pleaseinputthesong'namewhichyouwanttodelete:");scanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;}v=j;for(j=0;j{if(strcmp(w,dan[j].name)==0)c=j;fclose(fp);fp二fopen("data.txt","wb");for(j=0;j{if(j!=c)fwrite(&dan[j],sizeof(structsystem),1,fp);}fclose(fp);printf("DeleteOK!\n");i--;}voidbrowse(){intj;FILE*fp;fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)==1)printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf(”\n");}elsebreak;}fclose(fp);}voidsearch(){intflag,j,x;charw[20];FILE*fp;charv[20];printf("(1)Byauthor\n");printf("(2)Bysinger\n");printf("(3)Byname\n");printf("Pleasechoosewhichyouwanttosearch:\n");scanf("%d",&x);if(x==3){flag=O;printf("Pleaseinputthesong'sname:");scanf("%s",&w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].name,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;}}if(flag==0)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==2){flag=0;printf("Pleaseinputthesinger:");scanf("%s",&v);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].singer,v)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==1){flag=0;printf("Pleaseinputtheauthor:");seanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(struetsystem),1,fp)!=1)break;if(stremp(dan[j].author,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseprintf("Error!\n");}main(){inta;while(1){flea\n");printf("\t\tWelcometothesong'system!by******************printf("\t\t******************AoAMENU*\n\n"); printf("\t\t\t(1).Enter\n”);printf("\t\t\t(2).Delete\n”);printf("\t\t\t(3).Browse\n");printf("\t\t\t(4).Search'n");printf("\t\t\t(0).exit\n");printf("\t\t*************************************************\n");printf("\n\t\t\tPleasechoosethenumber(0-4):");seanf("%d",&a);if(a==0)break;switeh(a){ease1:enter();break;ease2:delete();break;ease3:browse();break;ease4:seareh();break;}}}
if(atol(numstr)==song[n].year)
case3:
printf("输入你要查的歌手\n");
for(n=0;n{if(!strcmp(numstr,song[n].singer))break;n++;}break;}printf("歌名作者歌手时间\n");printf("%6s%5s%5s%10s\n",song[n].name’song[n].year,song[n].author,song[n].singer);fclose(fp);}6各种被调函数(1)insert函数:数据的插入,用于个人的信息的补录,包括姓名、工作单位、电话号码和email地址。(2)del函数:用于通讯录中个人信息的删除。(3)change函数:用于通讯录中个人信息的修改,输入人名,对人名所对应的机构体内容进行修改(包括姓名、工作单位、电话号码和emaiI信息)。(4)searchname函数:用于输入姓名查找个人信息。如果通讯录中没有此人信息,显示“查无此人!”(5)searchnum函数:用于输入电话号码查询个人信息。如果通讯录中没此人信息,显示“查无此人!”(6)show函数:用于个人全部信息的显示。(7)income函数:用于所有原始个人信息的录入(包括姓名、电话号码、工作单位和email地址)。设计小结:本程序大体参考与网上信息,说实话,这程序我无法完成,但又必须做,即使不会或者做不完美,但是也要尽力去做,做这个程序是要我们能够使用所学的内容,这次设计,让我重新掌握了C语言,而且还得到了用C语言解决实际问题的宝贵经验,也从中学到了很多东西。让我懂得了做什么事都要有耐心,要有对什么事都认真仔细的品质,让我学会了很多以前不懂的东西,使我更加意识到实践的重要性!三:原程序#include#include#include#includevstring.h>inti=0;structsystem{charauthor[20];charsinger[20];chartime[20];charname[20];}dan[100];voidenter(){intj;charc[2];FILE*fp;if((fp二fopen("data.txt","w"))==NULL){printf("Cannotopenthefile!\n");exit(0);}for(j=0;jvi;j++)fwrite(&dan[j],sizeof(structsystem),1,fp);}while(1){printf("Pleaseinputtheauthor:'n");scanf("%s",dan[i].author);printf("Pleaseinputthesong'sname:\n");scanf("%s",dan[i].name);printf("Pleaseinputthesinger:\n");scanf("%s",dan[i].singer);printf("Pleaseinputtheoutday:\n");scanf("%s",dan[i].time);if(fwrite(&dan[i++],sizeof(structsystem),1,fp)!=1)printf("Filewriteerror'n");elseprintf("Successful!\n");printf("Isthereanymore?(Yes[y]/No[n])\n");scanf("%s",c);if(strcmp(c,"n")==0)break;}fclose(fp);voiddelete(){intj,v,c;charw[20];FILE*fp;printf("Pleaseinputthesong'namewhichyouwanttodelete:");scanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;}v=j;for(j=0;j{if(strcmp(w,dan[j].name)==0)c=j;fclose(fp);fp二fopen("data.txt","wb");for(j=0;j{if(j!=c)fwrite(&dan[j],sizeof(structsystem),1,fp);}fclose(fp);printf("DeleteOK!\n");i--;}voidbrowse(){intj;FILE*fp;fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)==1)printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf(”\n");}elsebreak;}fclose(fp);}voidsearch(){intflag,j,x;charw[20];FILE*fp;charv[20];printf("(1)Byauthor\n");printf("(2)Bysinger\n");printf("(3)Byname\n");printf("Pleasechoosewhichyouwanttosearch:\n");scanf("%d",&x);if(x==3){flag=O;printf("Pleaseinputthesong'sname:");scanf("%s",&w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].name,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;}}if(flag==0)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==2){flag=0;printf("Pleaseinputthesinger:");scanf("%s",&v);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].singer,v)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==1){flag=0;printf("Pleaseinputtheauthor:");seanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(struetsystem),1,fp)!=1)break;if(stremp(dan[j].author,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseprintf("Error!\n");}main(){inta;while(1){flea\n");printf("\t\tWelcometothesong'system!by******************printf("\t\t******************AoAMENU*\n\n"); printf("\t\t\t(1).Enter\n”);printf("\t\t\t(2).Delete\n”);printf("\t\t\t(3).Browse\n");printf("\t\t\t(4).Search'n");printf("\t\t\t(0).exit\n");printf("\t\t*************************************************\n");printf("\n\t\t\tPleasechoosethenumber(0-4):");seanf("%d",&a);if(a==0)break;switeh(a){ease1:enter();break;ease2:delete();break;ease3:browse();break;ease4:seareh();break;}}}
strcmp(numstr,song[n].singer))
printf("歌名作者歌手时间\n");
printf("%6s%5s%5s%10s\n",song[n].name’song[n].year,song[n].author,song[n].singer);
6各种被调函数
(1)insert函数:
数据的插入,用于个人的信息的补录,包括姓名、工作单位、电话号码和email地址。
(2)del函数:
用于通讯录中个人信息的删除。
(3)change函数:
用于通讯录中个人信息的修改,输入人名,对人名所对应的
机构体内容进行修改(包括姓名、工作单位、电话号码和emaiI信息)。
(4)searchname函数:
用于输入姓名查找个人信息。
如果通讯录中没有此人信息,显示“查无此人!
(5)searchnum函数:
用于输入电话号码查询个人信息。
如果通讯录中没此人信息,显示“查无此人!
(6)show函数:
用于个人全部信息的显示。
(7)income函数:
用于所有原始个人信息的录入(包括姓名、电话号码、工作单位和email地址)。
设计小结:
本程序大体参考与网上信息,说实话,这程序我无法完成,但又必须做,即使不会或者做不完美,但是也要尽力去做,做这个程序是要我们能够使用所学的内容,这次设计,让我重新掌握了C语言,而且还得到了用C语言解决实际问题的宝贵经验,也从中学到了很多东西。
让我懂得了做什么事都要有耐心,要有对什么事都认真仔细的品质,让我学会了很多以前不懂的东西,使我更
加意识到实践的重要性!
三:
原程序
#include
#include#include
#includevstring.h>
inti=0;
structsystem
charauthor[20];
charsinger[20];
chartime[20];
charname[20];
}dan[100];
voidenter()
intj;
charc[2];
FILE*fp;
if((fp二fopen("data.txt","w"))==NULL){
printf("Cannotopenthefile!
\n");exit(0);
for(j=0;jvi;j++)
fwrite(&dan[j],sizeof(structsystem),1,fp);
while
(1)
printf("Pleaseinputtheauthor:
'n");
scanf("%s",dan[i].author);
printf("Pleaseinputthesong'sname:
scanf("%s",dan[i].name);
printf("Pleaseinputthesinger:
scanf("%s",dan[i].singer);
printf("Pleaseinputtheoutday:
scanf("%s",dan[i].time);
if(fwrite(&dan[i++],sizeof(structsystem),1,fp)!
=1)
printf("Filewriteerror'n");
elseprintf("Successful!
printf("Isthereanymore?
(Yes[y]/No[n])\n");
scanf("%s",c);
if(strcmp(c,"n")==0)break;
voiddelete()
intj,v,c;
charw[20];
printf("Pleaseinputthesong'namewhichyouwanttodelete:
scanf("%s",w);
fp=fopen("data.txt","rb");
for(j=0;j<100;j++)
if(fread(&dan[j],sizeof(structsystem),1,fp)!
=1)break;
v=j;
for(j=0;j{if(strcmp(w,dan[j].name)==0)c=j;fclose(fp);fp二fopen("data.txt","wb");for(j=0;j{if(j!=c)fwrite(&dan[j],sizeof(structsystem),1,fp);}fclose(fp);printf("DeleteOK!\n");i--;}voidbrowse(){intj;FILE*fp;fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)==1)printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf(”\n");}elsebreak;}fclose(fp);}voidsearch(){intflag,j,x;charw[20];FILE*fp;charv[20];printf("(1)Byauthor\n");printf("(2)Bysinger\n");printf("(3)Byname\n");printf("Pleasechoosewhichyouwanttosearch:\n");scanf("%d",&x);if(x==3){flag=O;printf("Pleaseinputthesong'sname:");scanf("%s",&w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].name,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;}}if(flag==0)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==2){flag=0;printf("Pleaseinputthesinger:");scanf("%s",&v);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].singer,v)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==1){flag=0;printf("Pleaseinputtheauthor:");seanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(struetsystem),1,fp)!=1)break;if(stremp(dan[j].author,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseprintf("Error!\n");}main(){inta;while(1){flea\n");printf("\t\tWelcometothesong'system!by******************printf("\t\t******************AoAMENU*\n\n"); printf("\t\t\t(1).Enter\n”);printf("\t\t\t(2).Delete\n”);printf("\t\t\t(3).Browse\n");printf("\t\t\t(4).Search'n");printf("\t\t\t(0).exit\n");printf("\t\t*************************************************\n");printf("\n\t\t\tPleasechoosethenumber(0-4):");seanf("%d",&a);if(a==0)break;switeh(a){ease1:enter();break;ease2:delete();break;ease3:browse();break;ease4:seareh();break;}}}
if(strcmp(w,dan[j].name)==0)
c=j;
fp二fopen("data.txt","wb");
for(j=0;j{if(j!=c)fwrite(&dan[j],sizeof(structsystem),1,fp);}fclose(fp);printf("DeleteOK!\n");i--;}voidbrowse(){intj;FILE*fp;fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)==1)printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf(”\n");}elsebreak;}fclose(fp);}voidsearch(){intflag,j,x;charw[20];FILE*fp;charv[20];printf("(1)Byauthor\n");printf("(2)Bysinger\n");printf("(3)Byname\n");printf("Pleasechoosewhichyouwanttosearch:\n");scanf("%d",&x);if(x==3){flag=O;printf("Pleaseinputthesong'sname:");scanf("%s",&w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].name,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;}}if(flag==0)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==2){flag=0;printf("Pleaseinputthesinger:");scanf("%s",&v);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(structsystem),1,fp)!=1)break;if(strcmp(dan[j].singer,v)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseif(x==1){flag=0;printf("Pleaseinputtheauthor:");seanf("%s",w);fp=fopen("data.txt","rb");for(j=0;j<100;j++){if(fread(&dan[j],sizeof(struetsystem),1,fp)!=1)break;if(stremp(dan[j].author,w)==0){printf("Name:%s\n",dan[j].name);printf("Author:%s\n",dan[j].author);printf("Singer:%s\n",dan[j].singer);printf("Outday:%s\n",dan[j].time);printf("\n");flag=1;if(flag==O)printf("Cannotfindthesong!\n");fclose(fp);}elseprintf("Error!\n");}main(){inta;while(1){flea\n");printf("\t\tWelcometothesong'system!by******************printf("\t\t******************AoAMENU*\n\n"); printf("\t\t\t(1).Enter\n”);printf("\t\t\t(2).Delete\n”);printf("\t\t\t(3).Browse\n");printf("\t\t\t(4).Search'n");printf("\t\t\t(0).exit\n");printf("\t\t*************************************************\n");printf("\n\t\t\tPleasechoosethenumber(0-4):");seanf("%d",&a);if(a==0)break;switeh(a){ease1:enter();break;ease2:delete();break;ease3:browse();break;ease4:seareh();break;}}}
if(j!
=c)
printf("DeleteOK!
i--;
}voidbrowse()
if(fread(&dan[j],sizeof(structsystem),1,fp)==1)printf("Name:
%s\n",dan[j].name);
printf("Author:
%s\n",dan[j].author);printf("Singer:
%s\n",dan[j].singer);printf("Outday:
%s\n",dan[j].time);
printf(”\n");
elsebreak;
}voidsearch()
intflag,j,x;
charv[20];
printf("
(1)Byauthor\n");
(2)Bysinger\n");
printf("(3)Byname\n");
printf("Pleasechoosewhichyouwanttosearch:
scanf("%d",&x);
if(x==3)
flag=O;
scanf("%s",&w);
if(strcmp(dan[j].name,w)==0)
printf("Name:
%s\n",dan[j].author);
printf("Singer:
%s\n",dan[j].singer);
printf("Outday:
printf("\n");
flag=1;
if(flag==0)
printf("Cannotfindthesong!
elseif(x==2)
flag=0;
scanf("%s",&v);
if(strcmp(dan[j].singer,v)==0)
if(flag==O)
\n");fclose(fp);
elseif(x==1)
seanf("%s",w);
if(fread(&dan[j],sizeof(struetsystem),1,fp)!
if(stremp(dan[j].author,w)==0)
elseprintf("Error!
main()
inta;
flea\n");
printf("\t\tWelcometothe
song'system!
by
******************
printf("\t\t******************AoA
MENU
*\n\n");
printf("\t\t\t
(1).Enter\n”);
(2).Delete\n”);
printf("\t\t\t(3).Browse\n");
printf("\t\t\t(4).Search'n");
printf("\t\t\t(0).exit\n");
printf("\t\t**
***********************************************
\n
");
printf("\n\t\t\tPleasechoosethenumber(0-4):
seanf("%d",&a);
if(a==0)break;
switeh(a)
ease1:
enter();break;
ease2:
delete();break;
ease3:
browse();break;
ease4:
seareh();break;
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