gistfile1.h

int sum_for() {
    int x, result = 0;
    for (x=0;x<1000;++x) {
        result += x;
    }
    return result;
}
int sum_while() {
    int x, result = 0;
    x = 0;
    while (x<1000) {
        result += x;
        ++x;
    }
    return result;
}