cpp：函数返回数组

cpp：函数返回数组

 

 

 

 

一、函数返回数组

 

#include<iostream>


using namespace std;


int* ret_array()
{
        int a[]={1,2,3,4,5,6};
        int *pt=a;
        return pt;  
}


void print_array(int size, int* (*pt)())
{
        for(int i=0; i<size; i++)
        {
                // 调用返回值为数组的函数
                cout << "array["<< i <<"]="<< pt()[i]<< endl;
        }
}

 

 

 

 

二、代码运行

 

[root@rockylinux tmp]# uname -a
Linux rockylinux 4.18.0-372.19.1.el8_6.x86_64 #1 SMP Tue Aug 2 16:19:42 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
[root@rockylinux tmp]# 
[root@rockylinux tmp]# g++ --version
g++ (GCC) 8.5.0 20210514 (Red Hat 8.5.0-10)
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[root@rockylinux tmp]# 
[root@rockylinux tmp]# cat return_array.cpp 
#include<iostream>


using namespace std;


int* ret_array()
{
        int a[]={1,2,3,4,5,6};
        int *pt=a;
        return pt;  
}


void print_array(int size, int* (*pt)())
{
        for(int i=0; i<size; i++)
        {
                // 调用返回值为数组的函数
                cout << "array["<< i <<"]="<< pt()[i]<< endl;
        }
}


int main(int argc, char* argv[], char* envp[])
{
        print_array(6,ret_array);

        return 0;
}
[root@rockylinux tmp]# 
[root@rockylinux tmp]# g++ -g -o return_array return_array.cpp 
[root@rockylinux tmp]# 
[root@rockylinux tmp]# ./return_array
array[0]=1
array[1]=2
array[2]=3
array[3]=4
array[4]=5
array[5]=6
[root@rockylinux tmp]# 
[root@rockylinux tmp]#