With using functions, I'm supposed to find the total mass of a snowman.

For some reason, it's giving me the wrong answer:

Code:#include <stdio.h> #define PI 3.14159 #define SNOW_DEN 0.1 double Sphere_Volume( double radius); double Sphere_Mass (double den, double volume); int main() { int radius_1, radius_2, radius_3; double total_volume; double total_mass; printf("What is the radii of the head, body and leg of the snowman?\n"); scanf("%lf%lf%lf", &radius_1, &radius_2, &radius_3); total_volume= Sphere_Volume(radius_1)+ Sphere_Volume(radius_2) + Sphere_Volume(radius_3); total_mass= Sphere_Mass(SNOW_DEN, total_volume); printf("The total Mass in grams is %lf.\n", total_mass); system("PAUSE"); return 0; } double Sphere_Volume( double radius){ return 4*PI/3*radius*radius*radius; } double Sphere_Mass (double den, double volume){ return SNOW_DEN*volume; }

Where am I doing wrong?