【C语言】判断学生成绩等级

方法一:if-else

#include<stdio.h>
 int main()
{
    printf("请输入成绩:
");
    float score;
    scanf_s("%f", &score);
    if (score >= 90)
        printf("成绩等级为:A
");
    else
        if (score >= 80)
            printf("成绩等级为:B
");
        else
            if (score >= 70)
                printf("成绩等级为:C
");
            else
                if (score >= 60)
                    printf("成绩等级为:D
");
                else
                    printf("成绩等级为:E
");
}

方法2:switch语句

#include<stdio.h>
 int main()
{
    printf("请输入成绩:
");
    float score;
    scanf_s("%f", &score);
    switch ((int)score/10)
    {    
    case 10:
    case 9:printf("成绩等级为:A
"); break;
    case 8:printf("成绩等级为:B
"); break;
    case 7:printf("成绩等级为:C
"); break;
    case 6:printf("成绩等级为:D
"); break;
    default:printf("成绩等级为:E
");
        
    }
}
原文地址:https://www.cnblogs.com/HGNET/p/11834109.html