Thread: Active c programs.....a small prog. as starter

How can I make this program work.
I like to start to make a bit active programs, and starts in the small. I really like to hear from some of you, who knows something about this.

Tx

/* This program should be able to count up when the key u is pushed, and the same number should count down, if the key d is pushed..
*/

#include <stdio.h>
#include <conio.h>
#define U 100
#define D 117

int main()
{

int count = 0;
int ch;
printf("Her we count up or down..\n");
printf("Use the key 'u' to count up\n");
printf("Use the key 'd' to count down\n");
ch = getch();
switch(ch)
{
case U:
while(kbhit())
{
count++;
printf("%d", count);
if (ch == 'q')
return 0;
}
case D:
while(kbhit())
{
count--;
if (ch == 'q')
return 0;
}
default:
printf("Wrong key");
}

getch();
return 0;
}

Your main problem is the structure of the program. The while loops shouldn't be in the switch, in that way you can never count up AND down, just up OR down.

Code:

#include <stdio.h> 
#include <conio.h> 

int main() 
{ 
    int count = 0; 
    int ch; 
    
    printf("Here we count up or down..\n"); 
    printf("Use the key 'u' to count up\n"); 
    printf("Use the key 'd' to count down\n"); 
    
    while ((ch = getch ()) != 'q')
    {
        switch (ch)
        {
            case 'u':
            case 'U':
                count++;
                printf ("New value of count = %d\n", count);                
                break;                
            case 'd':
            case 'D':
                count--;
                printf ("New value of count = %d\n", count);
                break;
            default:
                printf ("Wrong key\n");
                break;
        }
    }
    
    return 0; 
}

Tx Perlude your the best...
And tx to Shiro too, It's very nice to have help
" just around the corner"