没有匹配函数'sort（int [2000]，int）'| 排序数组时

Question

I wanted to sort array in a simple way but I do get this error below. How to deal with that?

**No matching function for call to 'sort(int [2000], int)'|**

#include <iostream>
#include <algorithm>

using namespace std;

int main(){
    int v[2000];
    std::sort(v, 2000);
    cout << "Hello world!" << endl;
    return 0;
}

Answer 1

The correct statement is:

std::sort(v, v + 2000);

The function takes two iterators, the beginning and end of the range to sort. A pointer is a random-access iterator, so it can be used by a function that expects one. In this case, v + 2000 points past the end of the array and correctly stands for the end of the range.

Answer 2

You have two possibilities:

std::sort(v, v + 2000);

Or

std::sort(std::begin(v), std::end(v));

The first approach only works with arrays, the latter works with std::vector , std::array and lot's of other containers.