技術標籤：PAT

PAT 1036 Boys vs Girls (25分)

This time you are asked to tell the difference between the lowest grade of all the male students and the highest grade of all the female students.

Input Specification:

Each input file contains one test case. Each case contains a positive integer N, followed by N lines of student information. Each line contains a student’s name, gender, ID and grade, separated by a space, where name and ID are strings of no more than 10 characters with no space, gender is either F (female) or M (male), and grade is an integer between 0 and 100. It is guaranteed that all the grades are distinct.

Output Specification:

For each test case, output in 3 lines. The first line gives the name and ID of the female student with the highest grade, and the second line gives that of the male student with the lowest grade. The third line gives the difference grade ​F​​−grade M. If one such kind of student is missing, output Absent in the corresponding line, and output NA in the third line instead.

Sample Input 1:

3
Joe M Math990112 89
Mike M CS991301 100
Mary F EE990830 95

Sample Output 1:

Mary EE990830
Joe Math990112
6

Sample Input 2:

1
Jean M AA980920 60

Sample Output 2:

Absent
Jean AA980920
NA

**題意：**給出N個同學的資訊，輸出女生中最高分數獲得者的資訊和男生中最低分數獲得者的資訊，並輸出它們的差。如果不存在男生或女生，則在對應獲得者資訊處輸出Absent，同時分數差處輸出NA。

#include<cstdio>
 

struct student{
    char name[20];
    char id[20];
    int score;
}stu,Max_F,Min_M;
int main(){
    int n;
    char sex;//定義性別
    Max_F.score=-1;//初始化女生最高分為-1
    Min_M.score=101;//初始化男生最低分為101
    scanf("%d",&n);//輸入學生個數
    for(int i=0;i<n;i++){
        scanf("%s %c %s %d",stu.name,&sex,stu.id,&stu.score);
        if(sex=='F'&&stu.score>Max_F.score){//女生且分數高於當前最大值
                Max_F=stu;//更新女生最大值
        }
        else if(sex=='M'&&stu.score<Min_M.score){//男生且分數低於當前最小值
                Min_M=stu;//更新男生最小值
        }
    }
    if(Max_F.score==-1) printf("Absent\n");//只要有女生就不會為Absent
    else printf("%s %s\n",Max_F.name,Max_F.id);
    if(Min_M.score==101) printf("Absent\n");//沒有男生
    else printf("%s %s\n",Min_M.name,Min_M.id);
    if(Max_F.score==-1||Min_M.score==101) printf("NA\n");//沒有女生或男生，只要有就一定有分數，有分數就一定有差值
    else printf("%d\n",Max_F.score-Min_M.score);//輸出差值
    return 0;
}