add sub 1

#include<stdio.h>

int add(int a, int b)
{
    return a+b;
}

int sub(int a, int b)
{
    return a-b;
}
int main()
{
    int a,b;
    scanf("%d %d",&a, &b);

    int sum = add(a,b);
    printf("%d + %d = %d\n",a, b, sum);

    int ss = sub(a,b);
    printf("%d - %d = %d\n",a, b, ss);

    return 0;
}