最新C语言全部题目及答案文档格式.docx

最新C语言全部题目及答案文档格式.docx

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3．（a）Writeaprogramthatcalculatesanddisplaysthenumberofminutesin15days.

（b）Writeaprogramthatcalculatesanddisplayshowmanyhours180minutesequalto.

（c）（Optional）Howabout174minutes?

ANSWERS:

#include<

stdio.h>

intmain（）

{

printf（"

Thisismyfirstprogram!

"

）;

return0;

}

Thisismysecondprogram!

1"

2"

3"

4"

1234"

%d%d%d%d"

1,2,3,4）;

floatdays,minutes;

days=15;

minutes=days*24*60;

Thenumberofminutesin15daysare%f\n"

minutes）;

floatminutes,hours;

minutes=180;

hours=minutes/60;

180minutesequalto%fhours\n"

hours）;

minutes=174;

174minutesequalto%fhours\n"

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:

floatnet_price,sales_tax,total;

net_price=889;

sales_tax=net_price*0.06;

total=net_price+sales_tax;

Thetotalpurchasepriceis%g"

total）;

Pleaseinputanumberasradius:

\n"

floatradius,diameter,circumference,area;

scanf（"

%f"

&

radius）;

Thediameteris%g\n"

diameter=radius*2）;

Thecircumferenceis%g\n"

circumference=radius*2*3.14159）;

Theareais%g\n"

area=radius*radius*3.14159）;

floatSB,percentage,NB;

Interestcalculationprogram\n\nPleaseentertheStartingBalance:

SB）;

PleaseentertheAnnualinterestratepercentage:

percentage）;

NB=SB*percentage/100+SB;

\nTheBalanceafteroneyearis:

%g"

NB）;

Exercise3:

Selectionstructure

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

2．Writeaprogramthataskstheusertoenteranintegernumber,thentellstheuserwhetheritisanoddorevennumber.

3．Writeaprogramthatreadsinthreeintegersandthendeterminesandprintsthelargestinthegroup.

intgrade;

printf（"

Pleaseenterthegrade:

scanf（"

%d"

grade）;

if（grade>

=60&

&

grade<

=100）

Passed."

elseif（grade>

=0&

60）

Failed."

else

Error."

return0;

inta,b,c;

Pleaseenter3integernumbers\n"

ThenI'

lltellyouwhichisthelargest\n"

%d%d%d"

a,&

b,&

c）;

if（a>

b&

a>

c）

%disthelargest"

a）;

elseif（b>

a&

b>

b）;

elseif（c>

c>

b）

c）;

They'

reequal"

inta;

Pleaseenteranintegernumber\n"

lltellyouwhetherit'

sanoddorevennumber"

a）;

if（a%2==0）

%disanevennumber"