Hello! I am new to C programming, am using a book, "C for dummies" I am using codes in the book for learning C, here is my code and ERRORS or problem. Please help me out.
#include <stdio.h>
#include <conio.h>
#include <dos.h>
void dropbomb(void);
main()
{
printf("press any key to drop bomb:");
getch();
dropbomb();
printf("\nboooomb\n");
}
void dropbomb()
{
int x;
for(x=880;x>440;x-=10)
{
sound(x);
delay(100);
}
nosound();
}
and here are the errors:
undefined reference to 'sound'
undefined reference to 'delay'
undefined reference to 'nosound'
Thank you all you!
