xjgl/chengxu4(1).cpp

#include <stdio.h>

struct Student {
    int student_id;
    int class_id;
    float math_score;
    float physics_score;
    float english_score;   
};



int main() {
    struct Student students[4] = {
        {10001, 11, 99.5, 88.5, 89.5},
        {10002, 12, 77.9, 56.5, 87.5},
        {10003, 11, 92.5, 99.0, 60.5}
    };

    int new_student_id, new_class_id;
    float new_math_score, new_physics_score, new_english_score;

    scanf("%d %d %f %f %f", &new_student_id, &new_class_id, &new_math_score, &new_physics_score, &new_english_score);

    // 检查新输入的学号是否已存在
    int exist = 0;
    for (int i = 0; i < 3; i++) {
        if (new_student_id == students[i].student_id) {
            exist = 1;
            break;
        }
    }

    if (exist == 1) {
        printf("已存在学号的信息\n");
    } else {
        students[3].student_id = new_student_id;
        students[3].class_id = new_class_id;
        students[3].math_score = new_math_score;
        students[3].physics_score = new_physics_score;
        students[3].english_score = new_english_score;

        // 插入排序，按班级和总成绩进行排序
        for (int i = 1; i < 4; i++) {
            struct Student temp = students[i];
            int j = i - 1;
            while (j >= 0 && (temp.class_id < students[j].class_id || (temp.class_id == students[j].class_id && temp.math_score + temp.physics_score + temp.english_score > students[j].math_score + students[j].physics_score + students[j].english_score))) {
                students[j + 1] = students[j];
                j--;
            }
            students[j + 1] = temp;
        }

       
    }
    
     for (int i = 0; i < 4; i++) {
	    	if(students[i].student_id==new_student_id)
	    	{
		        printf("%d %d %.1f %.1f %.1f inserted\n", students[i].student_id, students[i].class_id,
		               students[i].math_score, students[i].physics_score, students[i].english_score);
	    	}
	    	else{
				 printf("%d %d %.1f %.1f %.1f\n", students[i].student_id, students[i].class_id,
				               students[i].math_score, students[i].physics_score, students[i].english_score);
			}
     }
    return 0;
    
}