simple program problem - need help
 

Hello.,
Im learning C online, and one of the examples from the internet is this:

#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);

}

but when im trying to compile it sais

ch5m.c: In function ‘main’:
ch5m.c:9: warning: return type of ‘main’ is not ‘int’

is there an error in the exesize?

Thanx!

Re: simple program problem - need help
 

Some C compiler will give you a warning when your main function does not return an integer.

In this case, do the following changes to the main function:

int main()

{

......

......

return 0;

}

Re: simple program problem - need help
 

you can also use the above statement as
void main()
{
........
.......
.....
getch();
}
since in using the void function you need have to use return anything.