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C++でPythonのforに対するelse節じみたことをする

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#include <iostream>
#include <vector>
using namespace std;

int main() {
    vector<int> my_vec;
    my_vec.resize(10, 0);
    [&]()->void{
        for(const auto a: my_vec){
            if(a != 0){
                cout << "Non-Zero exists" << endl;
                return;// break代わり
            }
        }//else{
            cout << "All is Zero" << endl;
        //}
    }();
    return 0;
}

(^^;

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