C语言编程练习题_05成绩转换

题目来源于网络，代码使用GCC编译运行通过。
这道题目算是很简单的一种了~~

输入一个百分制的成绩M，将其转换成对应的等级，具体转换规则如下：
	90~100为A;
	80~89为B;
	70~79为C;
	60~69为D;
	0~59为E;

代码如下

#include <stdio.h>



char CJZH(unsigned char grade)
{
	if(grade < 0)return 0;
	
	if(grade >= 90 && grade <= 100)return 'A';
	else if(grade >= 80 && grade <= 89)return 'B';
	else if(grade >= 70 && grade <= 79)return 'C';
	else if(grade >= 60 && grade <= 69)return 'D';
	else if(grade >= 0 && grade <= 59)return 'E';
}

int main()
{
	int grade = 0;
	char class = 0;
	printf("\r\nPlease Input you Grade!\r\n");
	scanf("%d",&grade);
	class = CJZH(grade);
	printf("\r\nThe Class is %c\r\n",class);
}