c - 出现三个错误

Question

此代码显示以下错误:

1. missing ) before type
   2. calc: too few arguments to call
   3. syntax error ) Visual stuio 2013 platform

我的代码:

  #include "math.h"
    void main()
    {
        float num[5];
        float (calc (float num[5]));
        calc(float num);/* transferring control to calc function)*/
        getch();
    }
    float calc(float nun[5])
    {
        int i;
        float num[5];
        float sum, avg, sqmn1, sumsqmn = 0, sqsd = 0; float sd;
        printf("\nEnter 5 numbers");
        for (i = 0; i < 5; i = i + 1)
        {
            scanf("%f", &num[i]);
        }
        sum = 0;
        for (i = 0; i < 5; i = i + 1)
        {
        sum = sum + num[i];
        }
        avg = sum / 5;
        for (i = 0; i < 5; i = i + 1)
        {
        sqmn1 = (avg - num[i])*(avg - num[i]);
            sumsqmn = sumsqmn + sqmn1;
        }
        sqsd = sumsqmn / 5;
        sd = sqrt(sqsd);
        printf("\nThe sum is %f", sum);
        printf("\nThe average is %f", avg);
        printf("\nThe stabdard deviation is %f", sd);
        getch();
    }

Answer 1

float (calc (float num[5]));

在你的main()中，这到底是什么？

IMO，它可以，

float ff;
ff = calc(num);

除此之外，

1. #include <stdio.h>失踪了。
2. 前向声明 float calc(float nun[5])失踪了。

您可以重写您的 main()作为

int main()
    {
        float num[5];
        float ff;
        ff = calc(num);/* transferring control to calc function)*/
        getch();

        return 0;
    }

但是，你也传递了num来自main()至calc()但我发现你从来没有用过它。你在做什么？