APCS 觀念題筆記

• switch-case 如果沒有 break 要接續下去。

int a = 5;
int plus(){
    a++;
}
int main(){
    int a = 10;
    plus();
    cout << a;
}
//ans is 10 not 11.

int a, b;
cin >> a >> b;
while(b != 0){
    int c = a % b;
    a = b;
    b = c;
}
cout << a << endl;