please I have a question

// ga is a global variable

int func_a() {
    int a = ga;
    return a>2 ? a-2 : 2-a;
}

int func_b() {
    return ga>2 ? ga-2 : 2-ga;
}

// ga is a global variable

int func_a() {
    int a = ga;
    return a>2 ? a-2 : 2-a;
}

int func_b() {
    return ga>2 ? ga-2 : 2-ga;
}