503小组第三章编程作业

#include<stdio.h> 
main()
{	
	int s;
	printf("请输入百分制成绩s:
");
	scanf("%d",&s);
		if (s>=90)
		printf("A
");
		else if(90>s&&s>=80)
		printf("B
");
		else if(80>s&&s>=70)
		printf("C
");
		else if(70>s&&s>=60)
		printf("D
");
		else if(60>s)
		printf("E
");
}

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