[BOJ/Step4] while문 (C++)

https://www.acmicpc.net/problem/10952 : A + B - 5

#include <iostream>
using namespace std;

int main(void){
    int a, b;
    while(true){
        cin >> a >> b;
        if(a==0 && b==0)
            break;
        cout << a + b << endl;
    }
}

 

https://www.acmicpc.net/problem/10951 : A + B - 4

#include <iostream>
using namespace std;

int main(void){
    int a, b;
    while(cin >> a >> b)
        cout << a + b << endl;
}

 

https://www.acmicpc.net/problem/1110 : 더하기 사이클

#include <iostream>
using namespace std;

int main(void){
    int n, n1, count = 0;
    cin >> n;
    n1 = n;
    while(true){
        if(n == n1 && count != 0)
            break;
        n1 = (n1%10)*10+((int(n1/10)+(n1%10))%10);
        count += 1;
    }
    cout << count << endl;
}