/*   solution for adding and subtracting two numbers   */

#include <stdio.h>

int main() {
	int number1, number2;
    float number3, number4;
    
    scanf("%d %d", &number1, &number2);
    scanf("%f %f", &number3, &number4);
    
    printf("%d %d\n", (number1 + number2), (number1 - number2));
    printf("%.1f %.1f", (number3 + number4), (number3 - number4));
    
    return 0;
}

**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;
}