[HackerRank] Day 1: Data Types

[HackerRank] Day 1: Data Types

Problem 🔗

Sample Input

12
4.0
is the best place to learn and practice coding!

Sample Output

16
8.0
HackerRank is the best place to learn and practice coding!

Explanation

When we sum the integers 4 and 12, we get the integer 16. When we sum the floating-point numbers 4.0 and 4.0, we get 8.0. When we concatenate HackerRank with is the best place to learn and practice coding!, we get HackerRank is the best place to learn and practice coding!.

Solution

int main() {
    ...    
    int i2;
    double d2;
    string s2, tmp;

    // Get line and convert each data type
    getline(cin, tmp);
    i2 = stoi(tmp);
    
    getline(cin, tmp);
    d2 = stod(tmp);
    
    getline(cin, s2);
    
    // output 1
    cout << i + i2 << endl;

    // output 2
    cout << fixed;
    cout.precision(1);
    cout << d + d2 << endl;
    
    // output 3
    cout << s + s2 << endl;

    return 0;
}

stoi(s)과 stod(s)를 사용해서 string을 int와 double로 각각 변환하였다.

cout << fixed;와 cout.precision(x);를 사용해서 소수점을 고정하고 1자리로 표기하였다.