#include<stdio.h>
int main(){
    int a,b,sum;
    printf("Enter any two integers: ");
    scanf("%d%d",&a,&b);
    sum = a + ~b + 1;
    printf("Difference of two integers: %d",sum);
    return 0;
}

Output:

 Enter any two integers: 10 4
 Difference of two integers: 6