错误 "expected initializer before 'using'" C++

error "expected initializer before 'using'" c++

本文关键字：C++ using before expected initializer 错误      更新时间：2023-10-16

>我是新的，一般的编程是新的。我试图运行这段代码：

#include<fstream>
#include <iostream>
#include "main.h"
using namespace std;
int main()
{
 short arr_size ()
float temp;
point point_arr[99];
ifstream my_file   ("points.txt");
while(!my_file.eof())
{
    my_file>>temp ;
    point_arr[arr_size].set_x(temp);
    my_file>>temp ;
    point_arr[arr_size].set_y(temp);
    arr_size++;
}
arr_size--;
my_file.close();
ex_point(point_array,arr_size);
cout<<"the middle point is:("<<mid_p(point_array,arr_size).get_x()<<","<<mid_p(point_array,arr_size).get_y()<<")n";
return 0;
}

IM 收到此错误："错误"'使用'之前的预期初始值设定项" C++"这是我第一次收到此错误。可能是"main.h"有问题？这是 "main.h" ：

    #ifndef MAIN_H_INCLUDED
#define MAIN_H_INCLUDED
#include<iostream>
class point
{
    float x ,y ;
public :
    point(float a,float b){x=a;y=b;}
    point(){};
    void set_x(float a){x=a;};
    void set_y(float b){x=b;};
    const float get_x(){return x; };
    const float get_y(){return y; };
    const void show();
    const float pitagoras();
};
const point mid_p(point[],float);
const void ex_point(point[],float)

#endif // MAIN_H_INCLUDED

谢谢！象牙

const void ex_point(point[],float)

在main.h末尾缺少一个分号。

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