Trouble with interactive program...

[NatMinx]

Ok here's my code...

for(;;) {
    printf("Please input a command: ");
    fscanf(stdin, "%s %s",cmd,infilename);

    if(strcmp(cmd,"exit")==0) {
        printf("--> Bye!\n");
        exit(0);
    }
    else if(strcmp(cmd,"remove")==0) {
        ..................................
        ..code that needs the infilename..
        ..................................
    }
    else {
        ..more code..
    }
}

Now my problem is, when I'm prompted for a command & I enter "exit" and hit enter, its still waiting for me to type in the infilename. So it doesnt exit right away.

How do I get around this?
Any help is much appreciated...

Thanx!

 

[ArkM]

Naturally, you ask TWO words in a single fscanf call. Use separate (f)scanf's for cmd name and parameter (infilename).

Always check fscanf (and scanf too) returned value. It returns number of successfully scanned fields. For example:

if (scanf("%s",cmd) != 1)
{
   /* No cmd value assigned: EOF or i/o error */
   ...
}
...

 

[xwb]

Also after the printf, add

fflush(stdout);

printfs are buffered and unless they are flushed, you won't see the next one.