Write a program to perform addition, subtraction, division and multiplication.

#include<stdio.h>
#include<conio.h>
int main()
{
int a,b,c;
a=10;
b=20;
c=a+b;
printf("addition is=%d",c);
c=a-b;
printf("\nsubtraction is=%d",c);
c=a*b;
printf("\nmultiplication is=%d",c);
c=a/b;
printf("\ndivision is =%d",c);
}