백준 2754번: 학점계산

https://www.acmicpc.net/problem/2754

1. 문제

map 사용 

2. 알고리즘

키워드 - 구현, 출력

3. 코드

#include <iostream>
#include <sstream>
#include <string>
#include <algorithm>
#include <functional>
#include <vector>
#include <list>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <stack>
#include <math.h>
#include <memory.h>
 
using namespace std;
 
#define MAX_SIZE 100
#define INF 0x7fffffff
#define CENDL "\n"
#define ll long long
 
int main() {
 
    cin.tie(0);
    std::ios::sync_with_stdio(false);
 
    map<string, float> m;
    m["A+"] = 4.3;
    m["A0"] = 4.0;
    m["A-"] = 3.7; 
    m["B+"] = 3.3;
    m["B0"] = 3.0;
    m["B-"] = 2.7;
    m["C+"] = 2.3;
    m["C0"] = 2.0;
    m["C-"] = 1.7;
    m["D+"] = 1.3;
    m["D0"] = 1.0;
    m["D-"] = 0.7;
    m["F"]  = 0.0;
 
    string s; cin >> s;
 
    cout << fixed;
    cout.precision(1);
    cout << m[s] << CENDL;
    return 0;
}