C++ Why can't write this constructor?

Question

I want to ask this question... Why we can't use Camera c1(20); ???

This is making class. But we find the error in Camera c1(20);

Please let me know...

#include <iostream>

class Camera{
private:
public:
    Camera(){

    }
    Camera(int x){

    }
};

class Phone{
private:
    Camera c1(20);
public:

};

int main(){

}

To avoid parsing issue in general, you may use `Camera c1{20};` or `Camera c1 = Camera(20);` — Jarod42, Jan 29 '18 at 09:17
Disagree with duplicate because in this question initialization is requested with constant value, not (ambiguous) identifier. While answer may be almost the same, question is different to me. — Jean-Baptiste Yunès, Jan 29 '18 at 09:23
@Jean-BaptisteYunès The problem is *any expression* in the `()`, how a compiler complains about the resulting ill-formed program is implementation defined. — Caleth, Jan 29 '18 at 09:36

score 0 · Accepted Answer · answered Jan 29 '18 at 09:18

0

To avoid parsing issue in general (See most vexing parse),

You may use Camera c1{20}; or Camera c1 = Camera(20);

answered Jan 29 '18 at 09:18

Jarod42

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C++ Why can't write this constructor?

1 Answers1