c - 使用函数和 for 循环的 float 组

Question

我只掌握了 C 语言的函数，所以请耐心等待。我的前两个函数是正确的，第三个函数可能是正确的。目标是在输入授予的分数和可用分数时能够输出最多 100 个作业的成绩。

我们得到的标准格式为 char GradeFromTotalRawMarks(floatmarksAwarded[], floatmarksAvailable[], int maxAssignments); 。我不断收到以下有关指针的错误(我还不知道)，并且我不知道如何使用最大赋值，这应该指示传递给函数的赋值总数。

argument of type "float" is incompatible with parameter of type "float *" 'function':
cannot convert from 'float' to 'float *

代码如下:

#include <stdio.h>

char GradeFromPercentage(float percentage);
char GradeFromRawMarks(float marksAwarded, float marksAvailable);
char GradeFromTotalRawMarks(float marksAwarded[], float marksAvailable[], int maxAssignments);

int main()
{
    int maxAssignments;
    float MarksAwarded[100];
    float MarksAvailable[100];
    GradeFromTotalRawMarks(MarksAwarded[100], MarksAvailable[100], maxAssignments);

    return 0;
}
char GradeFromPercentage(float percentage)
{
    char grade;
    if (percentage >= 90)
    {
        grade = 'A';
    }
    else if (percentage >= 70)
    {
        grade = 'B';
    }
    else if (percentage >= 50)
    {
        grade = 'C';
    }
    else if (percentage >= 30)
    {
        grade = 'D';
    }
    else
    {
        grade = 'F';
    }
    return grade;
}

char GradeFromRawMarks(float marksAwarded, float marksAvailable)
{
    float percentage = (marksAwarded / marksAvailable) * 100;
    GradeFromPercentage(percentage);

    return GradeFromPercentage(percentage);
}
char GradeFromTotalRawMarks(float marksAwarded[], float marksAvailable[], int maxAssignments)
{
    char finish = 'n';
    int count1;
    while (finish == 'n')
    {
        for (count1 = 0; count1 < 100 && finish == 'n'; count1++)
        {       
            printf("Enter the marks awarded:");
            scanf("%f", &marksAwarded[count1]);
            printf("Enter the marks available: \n", &marksAvailable[count1]);
            scanf("%f", &marksAvailable[count1]);

            GradeFromRawMarks(marksAwarded[count1], marksAvailable[count1]);

            printf("If you have finished, type n.");
            scanf("%c", &finish);
        }
    }

    return GradeFromRawMarks(marksAwarded[count1], marksAvailable[count1]);
}

Answer 1

在你的主函数中，检查这一行:

GradeFromTotalRawMarks(MarksAwarded[100], MarksAvailable[100], maxAssignments);

第一个参数错误。您应该传递整个数组。将该行更改为:

GradeFromTotalRawMarks(MarksAwarded, MarksAvailable, maxAssignments);

修复上述问题后，我编译了您的代码，它编译时没有任何错误。