basic function(lab)

#include<stdio.h>
int sum(int a,int b)
{
    return a+b;
}
int sub(int a,int b)
{
    return a-b;
}
float div(int a,int b)
{
    return (float)a/b;
}
int main()
{
    int a,b;
    scanf("%d %d",&a,&b);
    printf("sum is %d\n",sum(a,b));
    printf("sub is %d\n",sub(a,b));
    printf("div is %f\n",div(a,b));
}