Parallel assignment in C++

Question

Is there any way of doing parallel assignment in C++? Currently, the below compiles (with warnings)

#include  

int main() { 
  int a = 4;
           


        

Answer 1

Parallel assignment is not supported in C++. Languages that support this usually treat a,b,c as a list on either side of the assignment operator, this isn't the way the comma operator works in C++. In C++, a, b evaluates a and then b, so a, b = b, a is the same as a; b = b; a;.