
方法一:if-else
#include<stdio.h>
int main()
{
printf("请输入成绩:\n");
float score;
scanf_s("%f", &score);
if (score >= )
printf("成绩等级为:A\n");
else
if (score >= )
printf("成绩等级为:B\n");
else
if (score >= )
printf("成绩等级为:C\n");
else
if (score >= )
printf("成绩等级为:D\n");
else
printf("成绩等级为:E\n");
}
方法2:switch语句
#include<stdio.h>
int main()
{
printf("请输入成绩:\n");
float score;
scanf_s("%f", &score);
switch ((int)score/)
{
case :
case :printf("成绩等级为:A\n"); break;
case :printf("成绩等级为:B\n"); break;
case :printf("成绩等级为:C\n"); break;
case :printf("成绩等级为:D\n"); break;
default:printf("成绩等级为:E\n"); }
}