Why is 0 < -0x80000000?

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I have below a simple program:

#include <stdio.h>

#define INT32_MIN        (-0x80000000)

int main(void) 
{
    long long bal = 0;

    if(bal < INT32_MIN )
    {
        printf("Failed!!!");
    }
    else
    {
        printf("Success!!!");
    }
    return 0;
}

The condition if(bal < INT32_MIN ) is always true. How is it possible?

It works fine if I change the macro to:

#define INT32_MIN        (-2147483648L)

Can anyone point out the issue?

6 Answers
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