1] Program to find sum of two numbers.
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,s;
clrscr();
printf(“Enter two no: ”); scanf(“%d%d",&a,&b);
s=a+b;
printf(“sum=%d”,s);
getch();
}
Output:
Enter two no:
5 6
sum=11
2]
Program to find area and circumference of circle.
#include<stdio.h>
#include<conio.h>
void main()
{
int r;
float pi=3.14,area,ci; clrscr();
printf(“enter radius of circle: ”);
scanf(“%d”,&r); area=pi*r*r;
printf(“area of circle=%f ”,area); ci=2*pi*r;
printf(“circumference=%f ”,ci);
getch();
}
Output:
enter radius of a circle: 5 area of
circle=78.000 circumference=31.4
3] Program to find the simple
interest.
#include<stdio.h>
#include<conio.h>
void main()
{
int p,r,t,si;
clrscr();
printf(“enter principle, Rate of interest
& time to find simple interest: ”); scanf(“%d%d%d”,&p,&r,&t);
si=(p*r*t)/100;
printf(“simple intrest= %d”,si); getch();
}
Output:
enter principle, rate of interest
& time to find simple
interest: 500 5
2
simple interest=50
4] Program to convert
temperature from degree centigrade to Fahrenheit.
#include<stdio.h>
#include<conio.h>
void main()
{
float c,f; clrscr();
printf(“enter temp in centigrade: ”);
scanf(“%f”,&c);
f=(1.8*c)+32;
printf(“temp in Fahrenheit=%f ”,f);
getch();
}
Output:
enter temp in centigrade: 32 temp in
Fahrenheit=89.59998
5]
Program to calculate sum of 5 subjects and find percentage.
#include<stdio.h>
#include<conio.h>
void main()
{
int s1,s2,s3,s4,s5,sum,total=500;
float per;
clrscr();
printf(“enter marks of 5 subjects: ”);
scanf(“%d%d%d%d%d”,&s1,&s2,&s3,&s4,&s5);
sum=s1+s2+s3+s4+s5;
printf(“sum=%d”,sum);
per=(sum*100)/total;
printf(“percentage=%f”,per); getch();
}
Output:
enter marks of 5 subjects: 60
65
50
60
60
sum=300 percentage=60.000
6]
Program to
show swap of two no’s without using
third variable.
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b; clrscr();
printf(“enter value for a & b: ”);
scanf(“%d%d”,&a,&b);
a=a+b; b=a-b;
a=a-b;
printf(“after swapping the value of a & b:
%d %d”,a,b); getch();
}
Output:
enter value for a & b: 4 5
after swapping the value of a
& b: 5 4 7] 7]Program to reverse a
given number. #include<stdio.h>
#include<conio.h>
void main()
{
int n,a,r=0; clrscr();
printf(“enter any no to get its reverse: ”);
scanf(“%d”,&n);
while(n>=1)
{ a=n%10;
r=r*10+a; n=n/10;
}
printf(“reverse=%d”,r);
getch();
}
Output:
enter any no to get its reverse: 456
reverse=654
8] Program to
find gross salary. #include<stdio.h>
#include<conio.h>
void main()
{
int gs,bs,da,ta; clrscr();
printf(“enter basic salary: ”);
scanf(“%d”,&bs);
da=(10*bs)/100;
ta=(12*bs)/100;
gs=bs+da+ta;
printf(“gross salary=%d”,gs);
getch();
}
Output:
enter basic salary: 100 gross salary=122
9] Program to print a table of any number.
#include<stdio.h>
#include<conio.h>
void main()
{
int gs,bs,da,ta; clrscr();
printf(“enter basic salary: ”);
scanf(“%d”,&bs); da=(10*bs)/100; ta=(12*bs)/100; gs=bs+da+ta;
printf(“gross salary=%d”,gs); getch();
}
Output:
enter a no to know table: 2 2*1=2
2*2=4
2*3=6
2*4=8
2*5=10
2*6=12
2*7=14
2*8=16
2*9=18
2*10=20
10]
Program to find greatest
in 3 numbers.
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
clrscr();
printf(“enter value of a, b & c: ”);
scanf(“%d%d%d”,&a,&b,&c);
if((a>b)&&(a>c))
printf(“a is greatest”);
if((b>c)&&(b>a))
printf(“b is greatest”);
if((c>a)&&(c>b))
printf(“c is greatest”);
getch();
}
Output:
enter value for a, b& c: 5 7
4
b is greatest
11]
Program to show the use of conditional operator.
#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
printf(“enter value for a & b: ”);
scanf(“%d%d”,&a,&b);
(a>b)?
printf(“a is greater”):
printf(“b is
greater”);
getch();
}
Output:
enter value for a & b: 5 7
b is greater
12]
Program to find that entered year is leap year or not.
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf(“enter any year: ”);
scanf(“%d”,&n);
if(n%4==0)
printf(“year is a leap year”);
else
printf(“year is not a leap year”); getch();
}
Output:
enter any year: 1947 year is not a leap year
13] Program to find whether given no. is even or odd.
#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf(“enter any no: ”); scanf(“%d”,&n);
if(n%2==0)
printf(“no is even”);
else
printf(“no is odd”);
getch();
}
Output:
enter any no: 5 no is odd
14]
Program to shift inputed data by two bits to the left.
#include<stdio.h>
#include<conio.h>
void main()
{
int x,y;
clrscr();
printf(“Read the integer from keyboard :- ”);
scanf(“%d”,&x);
x<<=3;
y=x;
printf(“\nThe left shifted data is = %d ”,y);
getch();
}
Output:
Read the integer from keyboard :- 2 The left
shifted data is = 16
15] Program to use switch statement. Display Monday to Sunday.
#include<stdio.h>
#include<conio.h>
void main()
{
char ch;
clrscr();
printf(“enter m for Monday\nt for Tuesday\nw
for Wednesday\nh for Thursday\nf for Friday\ns for Saturday\nu for Sunday);
scanf(“%c”,&ch); switch(ch)
{
case ‘m’:
case ‘M’: printf(“monday”); break;
case ‘t’:
case ‘T’: printf(“tuesday”);
break;
case ‘w’:
case ‘W’: printf(“wednesday”);
break;
case ‘h’:
case ‘H’: printf(“thursday”); break;
case ‘f ’:
case ‘F’: printf(“friday”);
break;
case ‘s’:
case ‘S’: printf(“saturday”);
break;
case ‘u’:
case ‘U’: printf(“sunday”);
break;
default : printf(“wrong input”);
break;
}
getch();
}
Output:
enter m for Monday t for Tuesday
w for Wednesday h for Thursday
f for Friday
s for Saturday u for Sunday: f friday
16] Program to display arithmetic operator using
switch case.
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,n,s,m,su,d; clrscr();
printf(“enter two no’s : ”);
scanf(“%d%d”,&a,&b);
printf(“enter 1 for sum\n2 for multiply\n3for
subtraction\n4 for division: ”); scanf(“%d”,&n);
switch(n)
{
case 1:
s=a+b; printf(“sum=%d”,s); break;
case 2:
m=a*b; printf(“multiply=%d”,m);
break;
case 3:
su=a-b; printf(“subtraction=%d”,su);
break;
case 4:
d=a/b;
printf(“divission=%d”,d);
break;
default:
printf(“wrong input”);
break;
}
getch();
}
Output:
enter two no’s: 8 4
enter 1 for sum 2 for multiply
3 for subtraction
4 for division: 1 sum=12
17] Program to display first 10 natural no. & their sum.
#include<stdio.h>
#include<conio.h>
void main()
{
int i,sum=0;
clrscr(); for(i=1;i<=10;i++)
{
printf(“%d no is= %d\n”,i,I); sum=sum+i;
}
printf(“sum =%d”,sum); getch();
}
Output:
1 no is=1
2 no is=2
3 no is=3
4 no is=4
5 no is=5
6 no is=6
7 no is=7
8 no is=8
9 no is=9
10 no is=10 sum=55
18] Program to print stars Sequence1:
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j;
clrscr();
for(i=1;i<=5;i++)
{
for(j=1;j<=i;j++) printf(“*”);
printf(“\n”);
}
getch();
}
Output:
*
**
***
****
*****
19] Program to print stars Sequence2.
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,k;
clrscr(); for(i=1;i<=5;i++)
{
for(j=5;j>=i;j--)
printf(“ ”); for(k=1;k<=i;k++) printf(“*”);
printf(“\n”);
}
getch();
}
Output:
*
**
***
****
*****
20]
Program
to print stars Sequence3.
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,k;
clrscr(); for(i=1;i<=3;i++)
{
for(j=3;j>=i;j--)
printf(“ ”);
{
for(k=1;k<=i*2-1;k++) printf(“*”);
}
printf(“\n”);
}
getch();
}
Output:
*
***
*****
21]
Program
to print Fibonacci series up to 100.
#include<stdio.h>
#include<conio.h>
void main()
{
int a=1,b=1,c=0,i;
clrscr();
printf("%d\t%d\t",a,b); for(i=0;i<=10;i++)
{
c=a+b; if(c<100)
{
printf("%d\t",c);
}
a=b; b=c;
}
getch();
}
Output:
1 1 2 3 5 8 13 21 34 55 89
22]
Program
to find factorial of a number.
#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,fact=1; clrscr();
printf(“Enter any no: ”); scanf(“%d”,&n);
for(i=n;i>=1;i--)
{
fact=fact*i;
}
printf(“Factorial=%d”,fact);
getch();
}
Output:
Enter a no: 5 Factorial=120
23] Program to find whether given no. is a prime no. or not.
#include<stdio.h>
#include<conio.h>
void main()
{
int i,n,r=0; clrscr();
printf(“Enter any no: ”); scanf(“%d”,&n);
for(i=2;i<=n-1;i++)
{
if(n%i==0) r=1;
break;
}
if(r==0)
printf(“prime no”);
else
printf(“Not prime”); getch();
}
Output:
Enter any no: 16 Not prime
24]
Program
to display sum of series 1+1/2+1/3+… +1/n.
#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,sum=0; clrscr();
printf(“Enter any no: ”); scanf(“%d”,&n);
printf(“1”);
for(i=2;i<=n-1;i++) printf(“
1/%d +”,i); for(i=1;i<=n;i++) sum=sum+i;
printf(“ 1/%d”,n);
printf(“\nSum=1/%d”,sum+1/n);
getch();
}
Output:
Enter any no: 7
1 + 1/2 + 1/3 + 1/4 + 1/5 + 1/6 + 1/7
Sum=1/28
25] Program to display series and find sum of 1+3+5+…..... +n.
#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,sum=0; clrscr();
printf(“Enter any no: ”); scanf(“%d”,&n);
for(i=1;i<n;i=i+2)
{
printf(“%d+”,i); sum=sum+i;
}
printf("%d",n);
printf("\nsum=%d",sum+n);
getch();
}
Output:
Enter any no: 7 1+3+5+7
Sum=16
26]
Program
to use bitwise AND operator between the two
integers.
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
clrscr();
printf(“Read the integers from keyboard:- ”);
scanf(“%d %d”,&a,&b);
c=a&b;
printf(“\nThe Answer after ANDing is: %d ”,c);
getch();
}
Output:
Read the integers from keyboard:- 8 4 The
Answer after ANDing is: 0
27] Program to add two number using pointers.
#include<stdio.h>
#include<conio.h>
void main()
{
int *p1,*p2,sum; clrscr();
printf(“enter two no’s: ”);
scanf(“%d%d”,&*p1,&*p2); sum=*p1+*p2;
printf(“sum=%d”,sum);
getch();
}
Output:
enter two no’s: 10 20
sum=30
28]
Program
to add two number using pointers.
#include<stdio.h>
#include<conio.h>
void main()
{
int *p1,*p2,sum;
clrscr();
printf(“enter two no’s: ”); scanf(“%d%d”,&*p1,&*p2);
sum=*p1+*p2; printf(“sum=%d”,sum);
getch();
}
Output:
enter two no’s: 10 20
sum=30
29]
Program
to show sum of 10 elements of array & show the average.
#include<stdio.h>
#include<conio.h>
void main()
{
int a[10],i,sum=0; float av;
clrscr();
printf(“enter elements of an aaray: ”);
for(i=0;i<10;i++)
scanf(“%d”,&a[i]);
for(i=0;i<10;i++)
sum=sum+a[i];
printf(“sum=%d”,sum);
av=sum/10;
printf(“average=%.2f”,av);
getch();
}
Output:
enter elements of an array: 4 5
6
1
2
3
5
5
4
7
sum=42 average=4.22
30] Program to find the maximum no. in an array.
#include<stdio.h>
#include<conio.h>
void main()
{
int a[5],max,i; clrscr();
printf(“enter element for the array: ”); for(i=0;i<5;i++)
scanf(“%d”,&a[i]); max=a[0]; for(i=1;i<5;i++)
{
if(max<a[i])
max=a[i];
}
printf(“maximum no= %d”,max); getch();
}
Output:
enter elements for array: 5 4
7
1
2
maximum no= 7
31] Program
to display a matrix. #include<stdio.h>
#include<conio.h>
void main()
{
int a[3][2],b[3][2],i,j; clrscr();
printf(“enter value for a matrix: ”);
for(i=0;i<3;i++)
{
for(j=0;j<2;j++) scanf(“%d”,&a[i][j]);
}
printf(“enter value for b matrix: ”);
for(i=0;i<3;i++)
{
for(j=0;j<2;j++) scanf(“%d”,&b[i][j]);
}
printf(“\na
matrix is\n\n”); for(i=0;i<3;i++)
{
for(j=0;j<2;j++)
{
printf(“ %d ”,a[i][j]);
}
printf(“\n”);
}
printf(“\nb
matrix is\n\n”); for(i=0;i<3;i++)
{
for(j=0;j<2;j++)
{
printf(“ %d ”,b[i][j]);
}
printf(“\n”);
}
getch();
}
Output:
enter value for a matrix: 7 8
9
4
5
6
enter value for b matrix: 3 2
1
4
5
6
a matrix is
7 8
9 4
5 6
b matrix is 3 2
1 4
5 6
32]
Program to find sum of two matrices.
#include<stdio.h>
#include<conio.h>
void main()
{
int a[3][2],b[3][2],c[3][2],i,j;
clrscr();
printf(“Enter value for 1 matrix: ”);
for(i=0;i<3;i++)
{
for(j=0;j<2;j++) scanf(“%d”,&a[i][j]);
}
printf(“Enter value for 2 matrix: ”);
for(i=0;i<3;i++)
{
for(j=0;j<2;j++) scanf(“%d”,&b[i][j]);
}
for(i=0;i<3;i++)
{
for(j=0;j<2;j++)
c[i][j]=a[i] [j]+b[i][j];
}
printf(“Sum
of matrix is\n”); for(i=0;i<3;i++)
{
for(j=0;j<2;j++)
{
printf(“%d\t”,c[i][j]);
}
printf(“\n”);
}
getch();
}
Output:
Enter value for 1 matrix:
1
2
3
4
5
6
Enter value for 2 matrix:
4
5
6
1
3
2
Sum of matrix
is 5 7
9 5
8 8
33]
Program to find subtraction of two matrices.
#include<stdio.h>
#include<conio.h>
void main()
{
int a[5],b[5],c[5],i; clrscr();
printf(“enter value for array a ”);
for(i=0;i<5;i++)
scanf(“%d”,&a[i]);
printf(“enter value for array b ”);
for(i=0;i<5;i++)
scanf(“%d”,&b[i]);
for(i=0;i<5;i++)
c[i]=a[i]-b[i];
printf(“subtraction”);
for(i=0;i<5;i++)
printf(“ %d ”,c[i]);
getch();
}
Output:
enter value for array a: 7 8
9
4
5
enter value for array b: 4 5
6
1
2
subtraction 3 3 3 3 3
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