#include <stdio.h>
int main()
{
float a=10.257;
float b=2589.257;
float d=18.00;
float sum =a+b+d;    
{
printf("ENTER THE VALUES OF sum\n");
}
scanf("%f",&sum);
{
printf("the sum of the 3 numbers is = %f",sum);
}
return 0;
}