#include<stdio.h>
int total (int, int, int);
int
main ()
{
int x, y, z;
printf ("enter three numbers");
scanf ("%d%d%d", &x, &y, &z);
printf("total = %d", total(x,y,z));
}
int total (int a, int b, int c)
{
float Q;
if (a < 0)
printf ("error");
else if (b < 0)
printf ("error");
else if (c < 0)
printf ("error");
else
Q = (0.33 * a * a * a + 2 * b * b - 4 * a * c);
return Q;
}