S_chapter 5 prblm 1

#include<stdio.h>
int main()
//math problem
{
    double x,y,xpy,xmy;
    printf("enter the value of x+y:");
    scanf("%lf",&xpy);
    printf("enter the value of x-y:");
    scanf("%lf",&xmy);
    x=(xpy+xmy)/2;
    y=(xpy-xmy)/2;
    printf(" x= %0.2lf ,y=%0.2lf",x,y);
    return 0;



}