백준 2557, 10869, 10818

모든 문제는 C++로 풀었습니다.

 

2557번

#include <iostream>
using namespace std;
int main(void){
    cout << "Hello World!";
    return 0;
}

10869번

#include <iostream>
using namespace std;
int main(void){
    int A,B;
    cin >> A >> B;
    cout << A+B << endl;
    cout << A-B << endl;
    cout << A*B << endl;
    cout << A/B << endl;
    cout << A%B << endl;
}

10818번

#include <iostream>
using namespace std;

int main(void){
    int num;
    int max, min;
    cin >> num;
    int *myArray = new int[num];
    for(int i=0;i<num;i++){
        cin >> myArray[i];

        if(i==0){
            max = myArray[i];
            min = myArray[i];
        }
        else{
            if(max < myArray[i]){
                max = myArray[i];
            }
            if(min > myArray[i]){
                min = myArray[i];
            }
        }
    }
    cout << min << " "<< max;
}