最新C语言全部题目及答案.docx

最新C语言全部题目及答案.docx

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最新C语言全部题目及答案

C语言全部题目及答案

Exercise1:

ProgrammingEnvironmentandBasicInput/Output

1.Writeaprogramthatprints“Thisismyfirstprogram!

”onthescreen.

（a）Savethisprogramontoyourowndiskwiththenameofe2-1a;

（b）RunthisprogramwithoutopeningTurboC;

（c）Modifythisprogramtoprint“Thisismysecondprogram!

”,thensaveitase2-1b.Pleasedonotoverwritethefirstprogram.

2.Writeaprogramthatprintsthenumber1to4onthesameline.Writetheprogramusingthefollowingmethods:

（a）Usingfour“printf”statements.

（b）Usingone“printf”statementwithnoconversionspecifier（i.e.no‘%’）.

（c）Usingone“printf”statementwithfourconversionspecifiers

3．（a）Writeaprogramthatcalculatesanddisplaysthenumberofminutesin15days.

（b）Writeaprogramthatcalculatesanddisplayshowmanyhours180minutesequalto.

（c）（Optional）Howabout174minutes?

ANSWERS:

#include

intmain（）

{

printf（"Thisismyfirstprogram!

"）;

return0;

}

#include

intmain（）

{

printf（"Thisismysecondprogram!

"）;

return0;

}

#include

intmain（）

{

printf（"1"）;

printf（"2"）;

printf（"3"）;

printf（"4"）;

return0;

}

#include

intmain（）

{

printf（"1234"）;

return0;

}

#include

intmain（）

{

printf（"%d%d%d%d",1,2,3,4）;

return0;

}

#include

intmain（）

{

floatdays,minutes;

days=15;

minutes=days*24*60;

printf（"Thenumberofminutesin15daysare%f\n",minutes）;

return0;

}

#include

intmain（）

{

floatminutes,hours;

minutes=180;

hours=minutes/60;

printf（"180minutesequalto%fhours\n",hours）;

return0;

}

#include

intmain（）

{

floatminutes,hours;

minutes=174;

hours=minutes/60;

printf（"174minutesequalto%fhours\n",hours）;

return0;

}

Exercise2:

DataTypesandArithmeticOperations

1.Youpurchasealaptopcomputerfor$889.Thesalestaxrateis6percent.WriteandexecuteaCprogramthatcalculatesanddisplaysthetotalpurchaseprice（netprice+salestax）.

2．Writeaprogramthatreadsintheradiusofacircleandprintsthecircle’sdiameter,circumferenceandarea.Usethevalue3.14159for“π”.

3．Writeaprogramthatreadsintwonumbers:

anaccountbalanceandanannualinterestrateexpressedasapercentage.Yourprogramshouldthendisplaythenewbalanceafterayear.Therearenodepositsorwithdraws–justtheinterestpayment.Yourprogramshouldbeabletoreproducethefollowingsamplerun:

Interestcalculationprogram.

Startingbalance?

6000

Annualinterestratepercentage?

4.25

Balanceafteroneyear:

6255

ANSWER:

#include

intmain（）

{

floatnet_price,sales_tax,total;

net_price=889;

sales_tax=net_price*0.06;

total=net_price+sales_tax;

printf（"Thetotalpurchasepriceis%g",total）;

return0;

}

#include

intmain（）

{

printf（"Pleaseinputanumberasradius:

\n"）;

floatradius,diameter,circumference,area;

scanf（"%f",&radius）;

printf（"Thediameteris%g\n",diameter=radius*2）;

printf（"Thecircumferenceis%g\n",circumference=radius*2*3.14159）;

printf（"Theareais%g\n",area=radius*radius*3.14159）;

return0;

}

#include

intmain（）

{

floatSB,percentage,NB;

printf（"Interestcalculationprogram\n\nPleaseentertheStartingBalance:

"）;

scanf（"%f",&SB）;

printf（"PleaseentertheAnnualinterestratepercentage:

"）;

scanf（"%f",&percentage）;

NB=SB*percentage/100+SB;

printf（"\nTheBalanceafteroneyearis:

%g",NB）;

return0;

}

Exercise3:

Selectionstructure

1．WriteaCprogramthatacceptsastudent’snumericalgrade,convertsthenumericalgradetoPassed（gradeisbetween60-100）,Failed（gradeisbetween0-59）,orError（gradeislessthan0orgreaterthan100）.

2．Writeaprogramthataskstheusertoenteranintegernumber,thentellstheuserwhetheritisanoddorevennumber.

3．Writeaprogramthatreadsinthreeintegersandthendeterminesandprintsthelargestinthegroup.

ANSWER:

#include

intmain（）

{

intgrade;

printf（"Pleaseenterthegrade:

"）;

scanf（"%d",&grade）;

if（grade>=60&&grade<=100）

printf（"Passed."）;

elseif（grade>=0&&grade<60）

printf（"Failed."）;

else

printf（"Error."）;

return0;

}

#include

intmain（）

{

inta,b,c;

printf（"Pleaseenter3integernumbers\n"）;

printf（"ThenI'lltellyouwhichisthelargest\n"）;

scanf（"%d%d%d",&a,&b,&c）;

if（a>b&&a>c）

printf（"%disthelargest",a）;

elseif（b>a&&b>c）

printf（"%disthelargest",b）;

elseif（c>a&&c>b）

printf（"%disthelargest",c）;

else

printf（"They'reequal"）;

return0;

}

#include

#include

intmain（）

{

inta;

printf（"Pleaseenteranintegernumber\n"）;

printf（"ThenI'lltellyouwhetherit'sanoddorevennumber"）;

scanf（"%d",&a）;

if（a%2==0）

printf（"%disanevennumber",a）;

else