#include <stdio.h>

int main() {

int numStudents, i;

float score, total = 0;

int excellent = 0, good = 0, average = 0, pass = 0, fail = 0;

printf("歡迎使用成績轉(zhuǎn)換程序！\n");

printf("請輸入要轉(zhuǎn)換的人數(shù)：");

scanf("%d", &numStudents);

for (i = 1; i <= numStudents; i++) {

printf("請輸入第%d個學(xué)生的成績：", i);

scanf("%f", &score);

total += score;

if (score >= 90) {

excellent++;

} else if (score >= 80) {

good++;

} else if (score >= 70) {

average++;

} else if (score >= 60) {

pass++;

} else {

fail++;

}

}

printf("\n轉(zhuǎn)換結(jié)果如下：\n");

printf("優(yōu)：%d人，占比%.2f%%\n", excellent, (float)excellent / numStudents * 100);

printf("良：%d人，占比%.2f%%\n", good, (float)good / numStudents * 100);

printf("中：%d人，占比%.2f%%\n", average, (float)average / numStudents * 100);

printf("及格：%d人，占比%.2f%%\n", pass, (float)pass / numStudents * 100);

printf("不及格：%d人，占比%.2f%%\n", fail, (float)fail / numStudents * 100);

return 0;

}