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:\n");
    scanf("%d",&s);
        if (s>=90)
        printf("A\n");
        else if(90>s&&s>=80)
        printf("B\n");
        else if(80>s&&s>=70)
        printf("C\n");
        else if(70>s&&s>=60)
        printf("D\n");
        else if(60>s)
        printf("E\n");
}

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