#include <stdio.h>
#include <ctype.h>
 
int main() {
    int i;
    float point, co_curricular, academic_merit, total_merit;
    float total_points = 0.0;
    char grade;
 
    // 显示评分表
    printf("---------------------------------------\n");
    printf("| Grade | A | B | C | D | E |\n");
    printf("---------------------------------------\n");
    printf("| Points| 4 | 3 | 2 | 1 | 0 |\n");
    printf("---------------------------------------\n");
 
    // 输入四科成绩
    for (i = 1; i <= 4; i++) {
        printf("%d. Enter grade of the subject\t: ", i);
        scanf(" %c", &grade);  // 跳过空白字符
        grade = toupper(grade);  // 转大写
 
        switch (grade) {
            case 'A': point = 4.00; break;
            case 'B': point = 3.00; break;
            case 'C': point = 2.00; break;
            case 'D': point = 1.00; break;
            case 'E': point = 0.00; break;
            default:
                printf("Invalid grade entered.\n");
                return 1;  // 错误终止
        }
 
        printf("Points obtain\t\t\t: %.2f\n", point);
        total_points += point;
    }
 
    // 输入并验证课外活动分
    printf("\nEnter the co-curricular merit\n");
    printf("Co-curricular merit\t\t: ");
    scanf("%f", &co_curricular);
 
    if (co_curricular < 0 || co_curricular > 10) {
        printf("Error: Co-curricular merit must be 0-10.\n");
        return 1;
    }
 
    // 计算与输出
    academic_merit = total_points / 4;
    total_merit = (academic_merit * 90) / 4 + co_curricular;
 
    printf("\nAcademic merit\t\t\t: %.2f\n", academic_merit);
    printf("Total merit points\t\t: %.2f\n", total_merit);
 
    return 0;
}

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YQphCmEKZQoKNw==

a
a
a
e

7