c programs_with answers

8/9/2019 c Programs_with Answers

1/40

SIMPLE PROGRAMS

1. Program to Find Sum and Average of Three Real Numer!

#include

main(){

float a, b, c, sum, avg;

printf("\nnter value of three numbers! ");

scanf("f f f", a, b, c);

sum $ a % b % c;

avg $ sum & ';

printf("\num $ .f", sum);

printf("\n*verage $ .f", avg);

getch();

+

. Program to Find Area of S"uare # $ir%umferen%e of a $ir%le

#include

#define - './

main()

{

float len, r, area, circum;

printf("\nnter length of a s0uare! ");

scanf("f", len);

area $ len 1 len;printf("\nnter radius of a circle! ");

scanf("f", r);

circum $ 1 - 1 r;

printf("\n*rea of s0uare $ .f", area);

printf("\n2ircumference of circle $ .f", circum);

getch();

+

&. Program to find S'here Surfa%e Area and (olume of a S'here

S'here Surfa%e Area ) * + PI + r + r (olume of S'here ) ,*-& + PI + r + r + r #include

#define - './

main()

{

float r, area, vol;

printf("\nnter radius of phere! ");

scanf("f", r);

area $ / 1 - 1 r 1 r;


2/40

vol $ (/&') 1 - 1 r 1 r 1 r;

printf("\nphere urface *rea $ .f", area);

printf("\n3olume of phere $ .f", vol);

getch(); +

-++ Program to Find Area of a Triangle u!ing /ero ! Formula ++-

#include #include

main()

{

float a, b, c, s, area;

bac4!

printf("\nnter three sides of a triangle! ");

scanf("f f f", a, b, c);

if (a$$5 66 b$$5 66 c$$5)

{

printf("\n3alue of an7 side should not be e0ual to

8ero\n");goto bac4;

+

if (a%b


3/40

printf("\n\n2ompound -nterest! .f", ci);

getch();

+

&1

rogram to find imple -nterest and 2ompound -nterest- $ (p 1 r 1 t) & 55

2- $ p 1 po9(( % r&55), t) : p

1&

#include

#include

main()

{

float p, r, t, si, ci;

printf("\nnter priciple, rate and time! ");

scanf("f f f", p, r, t);

si $ (p 1 r 1 t) & 55;ci $ p 1 po9(( % r&55), t) : p;

printf("\n\nimple -nterest! .f", si);

printf("\n\n2ompound -nterest! .f", ci);

getch();

+

&1

rogram to 2onvert ime in econds to ours, =inutes and econds

1&

#include main()

{

long sec, hr, min, t;

printf("\nnter time in seconds! ");

scanf("ld", sec);

hr $ sec&'55;

t $ sec'55;

min $ t&5;

sec $ t5;

printf("\n\nime is ld hrs ld mins ld secs", hr, min, sec);

getch();+

&1

rogram to 9ap 3alues of 9o 3ariables using hird 3ariable

1&

#include

main()


4/40

{

int a, b, temp;

printf("\nnter an7 t9o numbers! ");

scanf("d d", a, b);

printf("\n\n?efore 9apping!\n");

printf("\na $ d\n", a);printf("\nb $ d\n", b);

temp $ a;

a $ b;

b $ temp;

printf("\n\n*fter 9apping!\n");

printf("\na $ d\n", a);

printf("\nb $ d\n", b);

getch();

+

&1rogram to 9ap 3alues of 9o 3ariables @ithout using 'rd 3ariable

1&

#include

main()

{

int a, b, temp;

printf("\nnter an7 t9o numbers! ");

scanf("d d", a, b);

printf("\n\n?efore 9apping!\n");

printf("\na $ d\n", a);printf("\nb $ d\n", b);

a $ a % b;

b $ a : b;

a $ a : b;

printf("\n\n*fter 9apping!\n");

printf("\na $ d\n", a);

printf("\nb $ d\n", b);

getch();+

&1?asic salar7 of an emplo7ee is input through the 4e7board. he A*

is B of the basic salar7 9hile the C* is B of the basic

salar7. rovident Dund is deducted at the rate of 5 of the gross

salar7(?%A*%C*).

rogram to 2alculate the Eet alar7.

1&

#include


5/40

main()

{

float basicFsal, da, hra, pf, grossFsal, netFsal;

printf("\nnter basic salar7 of the emplo7ee! Cs. ");

scanf("f", basicFsal);

da $ (basicFsal 1 B)&55;hra $ (basicFsal 1 B)&55;

grossFsal $ basicFsal % da % hra;

pf $ (grossFsal 1 5)&55;

netFsal $ grossFsal : pf;

printf("\n\nEet alar7! Cs. .f", netFsal);

getch();

+

$ONTROL STATEMENTS

&111 rogram to Dind Gargest of hree Eumbers 111include

main()

{

int a, b, c;

printf("\nnter three numbers! ");

scanf("d d d", a, b, c);

if (a>b a>c)

printf("\n\nd is greater", a);

else if (b>a b>c)

printf("\n\nd is greater", b);else

printf("\n\nd is greater", c);

getch();

+

&1

rogram to 2hec4 @hether a 2haracter is a 3o9el or not b7 using

switch Statement

1&

#include

main(){

char ch;

printf("\nnter an7 character! ");

scanf("c", ch);

s9itch (ch)

{

case HaH!


6/40

case H*H!

printf("\n\nc is a vo9el", ch);

brea4;

case HeH!

case HH!

printf("\n\nc is a vo9el", ch);brea4;

case HiH!

case H-H!


brea4;999.9'professors.com Iursharan ingh atla age Eo.

case HoH!

case HJH!


brea4;

case HuH!case HKH!


brea4;

default!

printf("\n\nc is not a vo9el", ch);

+

getch();

+

&1 rogram to Dind the um of Dirst 55 ositive -ntegers 1include

main()

{

int i, sum$5;

printf("\n\tum of first 55 positive numbers\n");

for(i$5; i


7/40

int i, sumven$5, sumJdd$5;

for (i$5; i 5)

{

digit $ n5;

n $ n&5;

sum $ sum % digit;

+

printf("\n\num of digits! d", sum);

getch();+

&111 rogram to Ceverse a Iiven Eumber 111&

#include

main()

{

long n;

int rev;

printf("\nnter an7 number! ");

scanf("ld", n);

printf("\nCeverse no. is!\n\n");9hile (n > 5)

{

rev $ n 5;

n $ n & 5;

printf("d", rev);

+

getch();


8/40

+

&111 rogram to rint Dirst E rime Eumbers 111&

#include

main()

{int i, L, n;

printf("\nnter ho9 man7 prime numbers 7ou 9ant to print! ");

scanf("d", n);

printf("\n");

for (i$; i


9/40

int n, temp, d, arm$5;


scanf("d", n);

temp $ n;

9hile (temp > 5)

{d $ temp5;

temp $ temp&5;

arm $ arm % (d1d1d);

+

if (arm $$ n)

printf("\n\nd is an *rmstrong number\n", n);

else

printf("\n\nd is not an *rmstrong number\n", n);

getch();+

&1

rogram to rint the Eumbers, @hich are Aivisible b7 ' and B from

Dirst 55 Eatural Eumbers

1&

#include

main()

{

int i;

printf("\nDirst 55 numbers 9hich are divisible b7 ' and

B\n\n");

for (i$; i


10/40

pal $ pal15 % M;

+

if (pal $$ n)

printf("\nd is palindrome", n);

else

printf("\nd is not palindrome", n);getch();+

&1 rogram to Dind Dactorial of a Eumber 9ithout using Cecursion 1&

#include

main()

{

int n, i;

long fact$;


scanf("d", n);for (i$; i


11/40

#include

int fibbo(int, int, int, int);

main()

{

int n, f, M$5, 7$, i$';

printf("\nnter value of n! ");scanf("d", n);

printf("\nd\td", M, 7);

fibbo(M, 7, n, i);

getch();

+

fibbo(int M, int 7, int n, int i)

{

int 8;

if (i 5)

{

rev $ n 5;

n $ n & 5;printf("d", rev);

+

getch();+

&1

rogram to Dind 3alue of sin(M) using Mpansion eries Iiven ?elo9!


12/40

sin(M) $ M : M'&'N % MB&BN : MO&ON........

1&

#include

#include

main()

{float base, p9r, sum, c$, m$, i$', g, h;

printf("\nnter the base value! ");

scanf("f", base);

printf("\nnter the po9er value! ");

scanf("f", p9r);

sum $ base;

ab!

m $ m 1 i;

h $ po9(:, c);

g $ po9(base, i);

sum $ sum % (h 1 g) & m;i $ i % ;

c%%;

m $ m 1 (i : );999.9'professors.com Iursharan ingh atla age Eo.

if (i


13/40

for (L$; L


14/40

+

if (n $$ 5)

{

printf("\n2D of numbers is! d", m);

goto end;

+if (n > m)

{

temp $ m;

m $ n;

n $ temp;

+

0 $ ;

9hile (0 N$ 5)

{

0 $ m n;

if (0 N$ 5){

m $ n;

n $ 0;

+

+

printf("\n2D of number is! d", n);

end!

getch();

+

&111 rogram to Dind 3o9els in a tring 111&

#include

#include

main()

{

char strR5S;

int count$5, i$5;

printf("\nnter an7 string! ");

gets(str);

9hile (strRiS N$ H\5H)

{if (strRiS$$HaH 66 strRiS$$HeH 66 strRiS$$HiH 66

strRiS$$HoH 66 strRiS$$HuH)

count%%;

i%%;

+

printf("\nEo. of vo9els! d", count);

getch();


15/40

+

&1

rogram to 2ount Eumber of @ords and Eumber of 2haracters in a

tring

1include

#include

main()

{

char strR5S;

int i$5, 9ord$5, chr$5;


gets(str);


{

if (strRiS $$ H H){

9ord%%;

chr%%;

+

else

chr%%;

i%%;

+

printf("\nEumber of characters! d", chr);

printf("\nEumber of 9ords! d", 9ord%);getch();

+

999.9'professors.com Iursharan ingh atla age Eo.

&111 rogram to -mplement brea4 tatement 111&

#include

main()

{

int i;

for (i$; i


16/40

&111 rogram to -mplement continue tatement 111&

#include

main()

{

int i, n, a, s0;

printf("\n\trogram finds s0uare of positive numbers onl7\n");printf("\no9 man7 numbers 7ou 9ant to enter! ");

scanf("d", n);

for (i$; i


17/40

printf("\n\n");

+

getch();

+

&111 rogram to *dd 9o =atrices 111include

main()

{

int aR5SR5S, bR5SR5S, cR5SR5S, i, L, ro9, col;

printf("\nnter number of ro9s and columns! ");

scanf("d d", ro9, col);

printf("\nnter elements of *rra7 *!\n");

for (i$5; i


18/40

getch();

+

&1

rogram to multipl7 t9o matrices. he order and the elements of the

t9o matrices 9ill be entered b7 the user as input to the programand if multiplication is not possible then it should be reported to

the user

1&

#include

main()

{

int aR5SR5S, bR5SR5S, cR5SR5S, i, L, 4, r, r, c, c;

bac4!

printf("\nnter no. of ro9s and columns of =atriM *! ");

scanf("d d", r, c);

printf("\nnter no. of ro9s and columns of =atriM ?! ");scanf("d d", r, c);

if (c N$ r)

{

printf("\n\n=ultiplication is not possible\n");

goto bac4;

+

printf("\n\nnter elements of =atriM *!\n");

for (i$5; i


19/40

+

for (i$5; i


20/40

{

int aR-TS, n, i, b;

printf("\nnter si8e of arra7! ");

scanf("d", n);

printf("\nnter elements!\n");

for (i$5; i


21/40

sum $ diagonalFsum(a, ro9, col);

printf("\num! d", sum);

getch();

+

int diagonalFsum(int MRCJ@SR2JGS, int r, int c)

{int i, L, s$5;

for (i$5; i


22/40

&11111 rogram to ort an *rra7 using election ort 11111&

#include

void selectionFsort();

int aRB5S, n;

main()

{int i;

printf("\nnter si8e of an arra7! ");

scanf("d", n);

printf("\nnter elements of an arra7!\n");

for(i$5; i


23/40

for (i$5; i Q)

printf("\n-tem doesnot eMist.");

getch();

+

STRINGS

&1111 rogram to 2oncatenate 9o trings using strcat() 1111&

#include

#include

main(){

char sR5S, sR5S;

printf("\nnter first string! ");

gets(s);

printf("\nnter second string! ");

gets(s);

strcat(s, s);

printf("\nhe concatenated string is! s", s);

getch();

+

&1 rogram to 2oncatenate 9o trings 9ithout using strcat() 1&

#include

#include

#include

main()

{

char stringR'5S, stringR5S;

int i, length$5, temp;

printf("nter the 3alue of tring! \n");gets(string);

printf("\nnter the 3alue of tring! \n");

gets(string);

for(i$5; stringRiSN$H\5H; i%%)

length%%;

temp $ length;



24/40

{

stringRtempS $ stringRiS;

temp%%;

+

stringRtempS $ H\5H;

printf("\nhe concatenated string is!\n");puts(string);

getch();

+

&111 rogram to 2ompare 9o trings using strcmp() 111&

#include

#include

main()

{

char sR5S, sR5S;

int result;printf("\nnter first string! ");

gets(s);

printf("\nnter second string! ");

gets(s);

result $ strcmp(s, s);

if (result $$ 5)

printf("\n?oth strings are e0ual");

else

printf("\n?oth strings are not e0ual");

getch();+

&11 rogram to 2ompare 9o trings @ithout using strcmp() 11&

#include

main()

{

char stringRBS,stringRBS;

int i,temp $ 5;

printf("nter the string value!\n");

gets(string);

printf("\nnter the tring value!\n");

gets(string);for(i$5; stringRiSN$H\5H; i%%)

{

if(stringRiS $$ stringRiS)

temp $ ;

else

temp $ 5;

+


25/40

if(temp $$ )

printf("?oth strings are same.");

else

printf("?oth string not same.");

getch();

+

&111 rogram to 2op7 tring using strcp7() 111&

#include

#include

main()

{

char sR5S, sR5S;

printf("\nnter string into s! ");

gets(s);

strcp7(s, s);

printf("\ns! s", s);getch();

+

&1 rogram to 2op7 one tring to *nother @ithout Ksing strcp7() 1&

#include

#include

#include

main()

{

char stringR5S, stringR5S;int i;

printf("nter the value of C-EI! \n");

gets(string);


stringRiS$stringRiS;

stringRiS$H\5H;

printf("\nhe value of C-EI is!\n");

puts(string);

getch();

+

&111 rogram to Dind Gength of a tring using strlen() 111&

#include

#include

main()

{

char sR5S;

int len;


26/40


gets(s);

len $ strlen(s);

printf("\nGength of string! d", len);

getch();

+

&111 rogram to Ceverse a tring using strrev() 111&

#include

#include

main()

{

char sR5S;


gets(s);

strrev(s);

printf("\nCeverse of string! s", s);getch();

+

&1 rogram to Ceverse a tring 9ithout using strrev() 1&

#include

#include

#include

main()

{

char stringR5S, stringR5S;int i, length;

printf("nter an7 string!\n");

gets(string);

length $ strlen(string):;


{

stringRlengthS$stringRiS;

length::;

+

stringRlengthS$H\5H;

printf("\nhe Ceverse of string is!\n");puts(string);

getch();

+

&111 rogram to -nput&Jutput trings using 2haracter Dunctions 111&

#include

main()


27/40

{

char nameR5S, ch $ H\5H;

int i$5;

printf("\nnter 7our name! ");

9hile (ch N$ H\rH)

{ch $ getche();

nameRiS $ ch;

i%%;

+

printf("\nEame! ");

for (i$5; nameRiSN$H\5H; i%%)

putchar(nameRiS);

getch();

+

&11 rogram to -nput&Jutput trings using gets() and puts() 11include

main()

{

char nameR5S;

puts("\nnter 7our name! ");

gets(name);

puts("\nEame! ");

puts(name);

getch();

+

&11 rogram to -nput&Jutput trings using printf() and scanf() 11&

#include

main()

{

char nameR5S;

printf("\nnter 7our name! ");

scanf("s", name);

printf("\nEame! s", name);

getch();

+

&111 rogram to Dind Gength of a tring @ithout using strlen() 111&

#include

main()

{

char strR5S;

int i $ 5;


28/40


gets(str);


i%%;

printf("\nGength of string! d", i);

getch();+

&111 rogram to Dind @hether a tring is alindrome or Eot 111&

#include

#include

main()

{

char sR5S, sR5S;

int result;


gets(s);strcp7(s, s);

strrev(s);

result $ strcmp(s, s);

if(result $$ 5)

printf("\n-t is a palindrome string");

else

printf("\n-t is not a palindrome string");

getch();

+

&1 rogram to Dind @hether a tring is alindrome or Eot 9ithout

using tring Dunctions 1&

#include

#include

main()

{

char sR5S;

int i, L, len$5, flag$5;


gets(s);

for (i$5; sRiSN$H\5H; i%%)len%%;

i $ 5;

L $ len:;

9hile (i < len)

{

if (sRiS N$ sRLS)

{


29/40

flag $ ;

brea4;

+

i%%;

L::;

+if (flag $$ 5)

printf("\ntring is palindrome");

else

printf("\ntring is not palindrome");

getch();

+

F6N$TIONS

&1111 rogram to ho9 2all b7 3alue 1111include

s9ap (int, int);

main()

{

int a, b;

printf("\nnter value of a b! ");

scanf("d d", a, b);

printf("\n?efore 9apping!\n");

printf("\na $ d\n\nb $ d\n", a, b);

s9ap(a, b);printf("\n*fter 9apping!\n");

printf("\na $ d\n\nb $ d", a, b);

getch();

+

s9ap (int a, int b)

{

int temp;

temp $ a;

a $ b;

b $ temp;

+

&1111 rogram to ho9 2all b7 Ceference 1111&

#include

s9ap (int 1, int 1);

main()

{

int a, b;


30/40

printf("\nnter value of a b! ");

scanf("d d", a, b);

printf("\n?efore 9apping!\n");

printf("\na $ d\n\nb $ d\n", a, b);

s9ap(a, b);

printf("\n*fter 9apping!\n");printf("\na $ d\n\nb $ d", a, b);

getch();

+

s9ap (int 1M, int 17)

{

int temp;

temp $ 1M;

1M $ 17;

17 $ temp;

+

RE$6RSION

&11 rogram to Dind Dactorial of a Eumber using Cecursion 11&

#include

long fact(int);

main()

{

int n;

long f;

printf("\nnter number to find factorial! ");scanf("d", n);

f $ fact(n);

printf("\nDactorial! ld", f);

getch();

+

long fact(int n)

{

int m;

if (n $$ )

return n;

else{

m $ n 1 fact(n:);

return m;

+

+

&111 rogram to rint Dibonacci eries using Cecursion 111&


31/40

#include

int fibbo(int, int, int, int);

main()

{

int n, f, M$5, 7$, i$';

printf("\nnter value of n! ");scanf("d", n);

printf("\nd\td", M, 7);

fibbo(M, 7, n, i);

getch();

+

fibbo(int M, int 7, int n, int i)

{

int 8;

if (i


32/40

POINTERS

&1111 rogram to -llustrate the 2oncept of ointers 1111&

#include

main(){

int a $ 5;

int 1p;

p $ a;

printf("\n*ddress of a! u", a);

printf("\n\n*ddress of a! u", p);

printf("\n\n*ddress of p! u", p);

printf("\n\n3alue of p! d", p);

printf("\n\n3alue of a! d", a);

printf("\n\n3alue of a! d", 1(a));

printf("\n\n3alue of a! d", 1p);getch();

+

STR6$T6RES

&11 rogram to -mplement tructure 11&

#include

struct student

{

char nameR5S;int rollno;

float mar4s;

+;

main()

{

struct student s $ {"abc", , /B5+;

struct student s;

printf("nter student Eame, Collno, =ar4s!\n");

scanf("sif", s.name, s.rollno, s.mar4s);

printf("\ntudent Eame\tCollno\t=ar4s\n");

printf("s\ti\tf", s.name, s.rollno, s.mar4s);

printf("\n");

printf("s\ti\tf",s.name,s.rollno,s.mar4s);

getch();

+

&11 rogram to -mplement tructure 9ith *rra7 11&


33/40

#include

struct student

{

char nameR5S;

int rollno;

float mar4s;+;

struct student sR'S;

main()

{

int i;

printf("nter Eame, CollEo, =ar4s!\n");

for(i$5; i


34/40

{

char nameR5S;

int rollno;

float mar4s;

+;

void sho9(struct student 1);main()

{

struct student s $ {"M78", , /B5+;

sho9(s);

getch();

+

void sho9(struct student 1ptr)

{

printf("tudent name\tCollno\t=ar4s\n");

printf("s\t\ti\tf",ptr:>name,ptr:>rollno,ptr:>mar4s);

+

SEAR$/ING AN7 SORTING

&1 rogram to earch an lement in the *rra7 using Ginear earch 1&

#include

main()

{

int aR5S, i, item;

printf("\nnter elements of an arra7!\n");

for (i$5; i


35/40

main()

{

printf("\nnter si8e of an arra7! ");

scanf("d", n);

printf("\nnter elements of an arra7 in sorted form!\n");

for(i$5; i


36/40

printf("\nd", aRiS);

getch();

+

void bubbleFsort()

{

int L, 4, temp;for(L$5; L


37/40

temp $ aRiS;

aRiS $ aRminS;

aRminS $ temp;

+

+

FILE /AN7LING

&111 rogram to @rite and Cead a 2haracter from a Dile 111&

#include

main()

{

D-G 1fptr;

char ch;

printf("\nnter an7 character! ");

scanf("c", ch);

fptr $ fopen("abc.tMt", "9");putc(ch, fptr);

fclose(fptr);

fptr $ fopen("abc.tMt", "r");

ch $ getc(fptr);

printf("\n2haracter! c", ch);

getch();

+

&111 rogram to @rite and Cead an -nteger from a Dile 111&

#include main()

{

D-G 1fptr;

int a;


scanf("d", a);

fptr $ fopen("abc.tMt", "9");

putc(a, fptr);

fclose(fptr);


a $ getc(fptr);printf("\n2haracter! d", a);

getch();

+

&111 rogram to @rite and Cead a tring from a Dile 1&

#include

#define -T B5


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main()

{

D-G 1fptr;

char sR-TS, sR-TS;


gets(s);fptr $ fopen("abc.tMt", "9");

fputs(s, fptr);

fclose(fptr);


fgets(s, -T, fptr);

printf("\nUou entered!");

puts(s);

getch();

+

&111 rogram to @rite Aata into a Dile using fprintf() 111include

main()

{

D-G 1fptr;

int rollno;

char nameR5S;

float mar4s;

printf("\nnter roll no.! ");

scanf("d", rollno);

printf("\nnter name! ");fflush(stdin);

gets(name);

printf("\nnter mar4s! ");

scanf("f", mar4s);

fptr $ fopen("abc.tMt", "9");

fprintf(fptr, "d s f", rollno, name, mar4s);

fclose(fptr);

getch();

+

&111 rogram to Cead Aata from Dile using fscanf() 111include

main()

{

D-G 1fptr;

int rollno;

char nameR5S;

float mar4s;


39/40


fscanf(fptr, "d s f", rollno, name, mar4s);

printf("\nColl Eo.! d", rollno);

printf("\n\nEame $ s", name);

printf("\n\n=*r4s $ .f", mar4s);

fclose(fptr);getch();

+

&111 rogram to 2op7 2ontents of Jne Dile to *nother 111&

#include

main()

{

D-G 1fp, 1fp;

char ch;

fp $ fopen("abc.tMt", "r");

fp $ fopen("M78.tMt", "9");9hile((ch $ getc(fp)) N$ JD)

putc(ch, fp);

fclose(fp);

fclose(fp);

getch();

+

&111 rogram to rint a Dile and 2ount Eumber of 2haracters 111&

#include

#includemain()

{

D-G 1fp;

char c;

int noc$5, nol$5, nob$5;

fp $ fopen("DileAispla7.2","r");

if (fp $$ EKGG)

{

printf("Dile canHt be opened");

return;

+9hile ((c $ fgetc(fp)) N$ JD)

{

putchar(c);

noc%%;

s9itch (c)

{

case H\tH!


40/40

case H H!

nob%%;

brea4;

case H\nH!

nol%%;

+sleep(5);

+

fclose(fp);

printf("\n\n\nEo. of characters $ d",noc);

printf("\n\nEo. of lines $ d",nol);

printf("\n\nEo. of 9hite spaces $ d",nob);

getch();

+

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