**Here is Sum and difference of two numbers solution in c**
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int main()
{
	int a,b;
    float i,j;
    scanf("%d %d\n%f %f",&a,&b,&i,&j);
    printf("%d %d\n%.1f %.1f",a+b,a-b,i+j,i-j);
    return 0;
}