number in c
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
int main()
{
int a, b;
float c, d;
scanf("%i %i", &a, &b);
scanf("%f %f", &c, &d);
int sum1 = a + b;
int sum2 = a - b;
float sum3 = c + d;
float sum4 = c - d;
printf("%i %i\n", sum1, sum2);
printf("%.1f %.1f", sum3, sum4);
return 0;
}