Expand scope of a variable initialized in a if/else sequence

Question

I\'m writing a piece of code in which I\'d like to use a different constructor of a class depending on a condition. So far I\'ve used if and else s

Answer 1

try the following :)

MyClass my_object = my_boolean ? MyClass(arg1) : MyClass(arg1,arg2);

Take into account that this code will work even if the class has no default constructor.

Here is a demonstrative example

#include  
#include 
#include 

int main () 
{
    struct Point
    {
        Point( int x ) : x( x ) {}
        Point( int x, int y ) : x( x ), y( y ) {}
        int x = 0;
        int y = 0;
    };

    std::srand( ( unsigned )std::time( 0 ) );

    Point p = std::rand() % 2 ? Point( 1 ) : Point( 1, 2 );

    std::cout << "p.x = " << p.x << ", p.y = " << p.y << std::endl;  

    return 0; 
}

I have gotten the following output

p.x = 1, p.y = 2

What output have you gotten? :)