我向我的%f提供的输入没有保存 [英] The input that i give to my %f does not save

问题描述

等级1和等级2不保存我给出的数字。所以我不能得到平均值，因为，总是以(0+0)/2的除法结束，有人能帮我吗？

    #include <stdio.h>
    #include <stdlib.h>

    int main()
    {
    int students;
    char name[50];
    double gradeOne, secondGrade, classAverage = 0, average = 0;

    for(students = 1;students <= 15; students++){
        printf("Tell me Your name: 
");
        fflush(stdin);
        scanf("%[^
]s", &name);
        //saves name
        printf("Tell me your first grade: 
");
        scanf("%f", &gradeOne);
        printf("Tell me your second grade: 
");
        scanf("%f", &secondGrade);
        //saves grade


        printf("
========================================
");

        printf("Student: %s
", name);
        printf("First Grade: %3.2f 
Second Grade: %3.2f 
", gradeOne, secondGrade);
        printf("%f", average);

        printf("
========================================
");

        average = (gradeOne + secondGrade)/2;
        //creates average
        printf("Average of the %d student: %3.2f",students, average);

        classAverage += average;
        //creates class average

    }
        classAverage = classAverage / (students - 1);
        printf("The class average was: %3.2f", classAverage);

    return 0;
}

推荐答案

%finscanf()用于阅读float。您应该使用%lf来阅读double。

请注意，您应该在printf()中使用%f打印double。较新的规范允许%lf用于printf()，但%f应更好地兼容。

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