Need some help understanding a weird C behavior

Posted by mike on Stack Overflow See other posts from Stack Overflow or by mike
Published on 2010-04-10T20:05:23Z Indexed on 2010/04/10 20:13 UTC
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This part of my code works fine:

#include <stdio.h>

int main(){
    //char somestring[3] = "abc";
    int i, j; 
    int count = 5;

    for((i=0) && (j=0); count > 0; i++ && j++){
        printf("i = %d  and j = %d\n", i, j);
        count--;
    }

    return 0;
}

The output as expected:

i : 0 and j : 0
i : 1 and j : 1
i : 2 and j : 2
i : 3 and j : 3
i : 4 and j : 4

Things get weird when I uncomment the char string declaration on the first line of the function body.

#include <stdio.h>

int main(){
    char somestring[3] = "abc";
    ...
}

The output:

i : 0 and j : 4195392
i : 1 and j : 4195393
i : 2 and j : 4195394
i : 3 and j : 4195395
i : 4 and j : 4195396

What's the logic behind this? I'm using gcc 4.4.1 on Ubuntu 9.10.

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