In the pythonesque code you posted...

Not only Pythonesque, but perhaps also a bit C-ockamamie. The following works, although you have to torture the code to get the syntax right (and the indentation is meaningless). And it still doesn't do anything.

#include <stdio.h>

void main () {

    int x = 5;
    int y = 6;

    while (x != y)
        if (x > y)
            printf("guessed %d: high.  ", x), printf("next guess %d \n
+", x = y);
        else if (x < y)
            printf("guessed %d: low.  ", x), printf("next guess %d \n"
+, x = y+1);
        else
            printf("got it! \n");

    printf("done guessing \n");

    }
[download]

Output:

c:\@Work\GCC\PerlMonks\gavin100>a
guessed 5: low.  next guess 7
guessed 7: high.  next guess 6
done guessing
[download]

Update: Changed node title. This really is OT.