返回数组指针的4种函数写法

#include <iostream>
#include <string>

using namespace std;

//传入的参数是数组的指针，返回值是数组的指针
string (*fun(string (*s)[10]))[10]
{
    return s;

}

//using str_arr = string (*)[10];
/*typedef string (*str_arr)[10];
str_arr fun1(str_arr s) {

　　　　return s;
　　}

*/

typedef string str_arr[10];
str_arr *fun1(str_arr *s) {
    return s;
}

auto fun2(string (*s)[10])  -> string (*)[10]
{
    return s;
}


string d[10];
decltype(d) *fun3(decltype(d) *s)
{
    return s;
}


int main(int argc, char *argv[])
{
    string s[10] = { "1", "2", "3", "4", "5", "6", "7", "8", "9", "1"};
    //decltype(s) *ds = fun(&s);
    decltype(s) *ds = fun1(&s);
    //decltype(s) *ds = fun2(&s);
    //decltype(s) *ds = fun3(&s);
    (*ds)[1] = "han";
    for (const auto &a : s)
    {
        cout << a << endl;
    }
    cout << endl;

    return 0;
}

运行结果如下：

转载于:https://www.cnblogs.com/wuchanming/p/3895728.html