백준 10952, 10953, 11021, 11718, 11721

10952

#include <iostream>
using namespace std;

int main(){
    int a,b;
    while(1){
        cin >> a >> b;
        if( a != 0 && b != 0) cout << a+b << endl;
        else break;
    }
    return 0;
}

10953

#include <iostream>
using namespace std;

int main(){
    int caseNum;
    int a,b;
    char comma;
    
    cin >> caseNum;
    for(int i=0;i<caseNum;i++){
        cin >> a >> comma >> b;
        cout << a+b << endl;
    }
    return 0;
}

11021

#include <iostream>
using namespace std;

int main(){
    int caseNum,a,b;
    cin >> caseNum;
    for(int i=0;i<caseNum;i++){
        cin >> a >> b;
        cout << "Case #"<<i+1<<": "<< a+b << endl;
    }
    return 0;
}

11718

#include <iostream>
using namespace std;

int main(){
    string str;
    while(1){
        getline(cin,str);
        if(!cin.eof()) cout << str << endl;
        else break;
    }
    return 0;
}

11721

#include <iostream>
using namespace std;

int main(){
    string str;
    int j=0;

    getline(cin,str);
    for(int i=0;i<str.length();i++){
        cout << str[i];
        if((i+1)%10 == 0) cout << endl;
    }
    return 0;
}