Student_registration_management_system

//步骤3// #include <stdio.h>

struct Student { int id; float mathGrade; float physicsGrade; float englishGrade; float totalGrade; float averageGrade; };

void displayMenu() { printf(" 1.Input\n"); printf(" 2.Output\n"); printf(" 3.Order\n"); printf(" 4.Quit\n"); }

void makeThingsOrdered() { printf("You are trying to Make things ordered\n"); }

void quitProgram() { printf("You are about to Quit\n"); }

void displayWrongInput() { printf("Wrong input\n"); }

void inputStudentInfo(struct Student students[3]) {

for (int i = 0; i < 3; ++i) {
    printf("Student %d:\n", i + 1);

    // Input student details
    
    scanf("%d", &students[i].id);

    
    scanf("%f", &students[i].mathGrade);

   
    scanf("%f", &students[i].physicsGrade);

    
    scanf("%f", &students[i].englishGrade);

    // Calculate total and average grades
    students[i].totalGrade = students[i].mathGrade + students[i].physicsGrade + students[i].englishGrade;
    students[i].averageGrade = students[i].totalGrade / 3;
}

}

void displayStudentInfo(struct Student students[3]) { // Sort students based on total grade for (int i = 0; i < 2; ++i) { for (int j = 0; j < 2 - i; ++j) { if (students[j].totalGrade > students[j + 1].totalGrade) { struct Student temp = students[j]; students[j] = students[j + 1]; students[j + 1] = temp; } } }

// Display sorted student info
for (int i = 0; i < 3; ++i) {
    printf("学号 %d,总成绩 %.1f,平均成绩 %.1f\n", students[i].id, students[i].totalGrade, students[i].averageGrade);
}

}

int main() { char choice; struct Student students[3];

do {
    displayMenu();
    printf("Enter your choice: ");
    scanf(" %c", &choice);

    switch (choice) {
        case 'i':
            inputStudentInfo(students);
            break;
        case 'o':
            displayStudentInfo(students);
            break;
        case 'm':
            makeThingsOrdered();
            break;
        case 'q':
            quitProgram();
            break;
        default:
            displayWrongInput();
    }
} while (choice != '4');

return 0;

}