#include <stdio.h>
 
int CalcVolume (int length, int width, int height);
 
void PrintIt (int vol);
 
void main()
{	
int volume1, volume2;
int x = 8, y = 15, z = 20;
volume1 = CalcVolume (10, 20, 30);
PrintIt (volume1);
volume2 = CalcVolume (x, y, z);		
PrintIt (volume2);	
}	
 
/* end of main */	
 
int CalcVolume (int length, int width, int height)	
 
{
 
int vol;	
vol = length * width * height;
return vol;	
}
/* end of CalcVolume */
 
void PrintIt (int vol)
{		
printf("The volume is: %d\n", vol);
}

int main()
{
......
......
return 0;
}