1359.GPA SDNUOJ 1359(2018新生第一次周赛测试题)

当时我不会

Description
Each course grade is one of the following five letters: A, B, C, D, and F. (Note that there is no grade E.) The grade A indicates superior achievement , whereas F stands for failure. In order to calculate the GPA, the letter grades A, B, C, D, and F are assigned the following grade points, respectively: 4, 3, 2, 1, and 0.
Input
The input file will contain data for one or more test cases, one test case per line. On each line there will be one or more upper case letters, separated by blank spaces.
Output
Each line of input will result in exactly one line of output. If all upper case letters on a particular line of input came from the set {A, B, C, D, F} then the output will consist of the GPA, displayed with a precision of two decimal places. Otherwise, the message “Unknown letter grade in input” will be printed.
Sample Input
A B C D F
B F F C C A
D C E F
Sample Output
2.00
1.83
Unknown letter grade in input

#include <cstdio>
#include <iostream>
#include <cstring>
#include <cmath>
#include <algorithm>
using namespace std;

int main()
{
    char s[1005];
    while(gets(s))
    {
        double sum = 0;
        double num = 0;
        bool flag = 0;
//        cout << s << '\n';
        for(int i = 0; s[i] != '\0'; i++)
        {
            if(flag)
                break;
            switch(s[i])
            {
            case 'A':
                sum += 4;
                num ++;
                break;
            case 'B':
                sum += 3;
                num++;
                break;
            case 'C':
                sum += 2;
                num++;
                break;
            case 'D':
                sum++;
                num++;
                break;
            case 'F':
                num++;
                break;
            case ' ':
                break;
            default:
                cout << "Unknown letter grade in input" << '\n';
                flag = 1;
            }
        }
        if(!flag)
            printf("%.2f\n", sum/num);
    }
    return 0;
}

全部评论

相关推荐

深夜书店vv:腾讯是这样的,去年很多走廊都加桌子当工区
点赞 评论 收藏
分享
07-07 11:33
江南大学 Java
已经在暑假实习了&nbsp;,没有明确说有hc,纠结实习到八月份会不会有点影响秋招毕竟感觉今年好多提前批
程序员小白条:92的话准备提前批,其他没必要,没面试机会的,而且你要准备充分,尤其八股和算法题
点赞 评论 收藏
分享
评论
点赞
收藏
分享

创作者周榜

更多
牛客网
牛客网在线编程
牛客网题解
牛客企业服务