include "iostream.h"
#include "stdlib.h"
#define N 12

void process(float *p,int n,float (*fun)());
float arr_sum(float arr[],int n)
{
        int i;
        float sum=0;
        for(i=0;i<n;i++)
                sum+=arr[i];
        cout<<"数组和为:";
        return(sum);
}
void process(float *p,int n,float  (*fun)())   //调用功能函数
{
        float result;
        result = (*fun)(p,n);
        
        cout<<result<<endl;
        return ;}
void main()
{
  int i;
  float a[N];
  cout<<"输入要选课的系统:";
  for(i=0;i<N;i++)
          cin>>a[i];
  float arr_odd(),(*pt)();
  int n = N;
  pt = arr_odd();
  process(a,n,pt);
  process(a,N,arr_odd);
}


D:\c++\book\21function\21function.cpp(20) : error C2197: 'float (__cdecl *)(void)' : too many actual parameters
D:\c++\book\21function\21function.cpp(68) : error C2440: '=' : cannot convert from 'float' to 'float (__cdecl *)(void)'
        There is no context in which this conversion is possible
执行 cl.exe 时出错.



实在是新手，刚开始学，希望各位老师不吝赐教！谢谢！！！！！！！！！！！！！！！