c++ 检查数组是否等于数组未生成

Question

Ddoes any body know how do do this? Thanks if you do. I am new in c++. I don't know what do do. Python is much better in my opinion.

#include <bits/stdc++.h>
using namespace std;
int main(){
    int nums[] = {1, 2, 3, 4};
    if (nums == [1, 2, 3, 4]){
        cout<<1;
    }
}

Answer 1

You should use std::array instead of plain arrays to realize this.

#include <iostream>
#include <array>

int main(void) {
    std::array<int, 4> nums = {1, 2, 3, 4};
    if (nums == std::array<int, 4>{1, 2, 3, 4}){
        std::cout<<1;
    }
}

Also see:

• c++ - Why is "using namespace std;" considered bad practice? - Stack Overflow
• c++ - Why should I not #include <bits/stdc++.h>? - Stack Overflow

Answer 2

From C++17, you can use class template argument deduction to simplify MikeCAT's solution like this:

std::array nums = {1, 2, 3, 4};
if (nums == std::array{1, 2, 3, 4}) {
    std::cout << 1;
}