cpp/C5/P7/c7-4-2.c

#include <stdio.h>
float add(float x,float y)       
 {float z;                          
  z=x+y;
  return(z);
}

int main()
{
 float a,b,c;
 printf("Please enter a and b:");
 scanf("%f,%f",&a,&b);
 c=add(a,b);
 printf("sum is %f\n",c);
 return 0;
}