[BOJ/Step3] for문 (C++)

https://www.acmicpc.net/problem/2739 : 구구단

#include <iostream>
using namespace std;

int main(void){
    int n;
    cin >> n;
    for(int i = 1; i < 10; i++){
        cout << n << " * " << i << " = " << n*i << endl;
    }
}

 

https://www.acmicpc.net/problem/10950 : A + B - 3

#include <iostream>
using namespace std;

int main(void){
    int n;
    cin >> n;
    for(int i = 0; i < n; i++){
        int a, b;
        cin >> a >> b;
        cout << a + b << endl;
    }
}

 

https://www.acmicpc.net/problem/8393 : 합

#include <iostream>
using namespace std;

int main(void){
    int n, count = 0;
    cin >> n;
    for(int i = 0; i < n; i++)
        count += i+1;
    cout << count << endl;
}

 

https://www.acmicpc.net/problem/15552 : 빠른 A+B

#include <iostream>
using namespace std;

int main(void){
    int n;
    scanf("%d", &n);
    for(int i = 0; i < n; i++){
        int a, b;
        scanf("%d %d", &a, &b);
        printf("%d\n", a + b);
    }
}

 

https://www.acmicpc.net/problem/2741 : N 찍기

#include <iostream>
using namespace std;

int main(void){
    int n;
    cin >> n;
    for(int i = 0; i < n; i++)
        printf("%d\n", i+1);
}

 

https://www.acmicpc.net/problem/2742 : 기찍 N

#include <iostream>
using namespace std;

int main(void){
    int n;
    cin >> n;
    for(int i = n; i > 0; i--)
        printf("%d\n", i);
}

 

https://www.acmicpc.net/problem/11021 : A + B - 7

#include <iostream>
using namespace std;

int main(void){
    int t;
    scanf("%d", &t);
    for(int i = 0; i < t; i++){
        int a, b;
        scanf("%d %d", &a, &b);
        printf("Case #%d: %d\n", i + 1, a + b);
    }
}

 

https://www.acmicpc.net/problem/11022 : A + B - 8

#include <iostream>
using namespace std;

int main(void){
    int t;
    scanf("%d", &t);
    for(int i = 0; i < t; i++){
        int a, b;
        scanf("%d %d", &a, &b);
        printf("Case #%d: %d + %d = %d\n", i + 1, a, b, a + b);
    }
}

 

https://www.acmicpc.net/problem/2438 : 별 찍기 - 1

#include <iostream>
using namespace std;

int main(void){
    int n;
    cin >> n;
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= i; j++)
            printf("*");
        printf("\n");
    }
}

 

https://www.acmicpc.net/problem/2439 : 별 찍기 - 2

#include <iostream>
using namespace std;

int main(void){
    int n;
    cin >> n;
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= n - i; j++)
            printf(" ");
        for(int j = 1; j <= i; j++)
            printf("*");
        printf("\n");
    }
}

 

https://www.acmicpc.net/problem/10871 : X보다 작은 수

#include <iostream>
using namespace std;

int main(void){
    int n, x;
    cin >> n >> x;
    for(int i = 0; i < n; i++){
        int t;
        cin >> t;
        if(t < x) cout << t << " ";
    }
}