C语言实现学生成绩等级划分的方法实例

#include<stdio.h>
int main(int argc, const char *argv[])
{
	printf("please input your score:\n");
	float score;
	scanf("%f",&score);
	if(score<0||score>100){
		printf("no in [0-100]\n");
	}
	else{
	if(score>=90)
		printf("A-excellent\n");
			else{
			if(score>=70)
				printf("b-good\n");
					else{
					if(score>=60)
						printf("c-ok\n");
							else
								printf("D-jiayou\n");
							}
				}
		}
	return 0;
}