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searching for the name of a variable linked to a cout! like a:cout c++

When I was searching for new information through source code in the internet, I saw someone used goto to a variable, and this variable was linked with a cout statement, the same as in std::cout.

He wrote a:cout.

Can you help me to find the name of this function?

void Main_Menu() {
    int i;
    cout << "\n\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t\t\t\t\t  HOSPITAL MANAGEMENT SYSTEM \n\n";
    cout << "\n\n\t\t\t\t\t\tPlease,  Choose from the following Options: \n\n";
    cout << "\t\t\t\t\t\t _________________________________________________________________ \n";
    cout << "\t\t\t\t\t\t|                                                                |\n";
    cout << "\t\t\t\t\t\t|             1  >> Add New Patient Record                        |\n";
    cout << "\t\t\t\t\t\t|             2  >> Add Diagnosis Information                     |\n";
    cout << "\t\t\t\t\t\t|             3  >> Full History of the Patient                   |\n";
    cout << "\t\t\t\t\t\t|             4  >> Information About the Hospital                |\n";
    cout << "\t\t\t\t\t\t|             5  >> Exit the Program                              |\n";
    cout << "\t\t\t\t\t\t|_________________________________________________________________|\n\n";
a:  cout << "\t\t\t\t\t\tEnter your choice: "; 
cin >> i;
if (i > 5 || i < 1) { 
    cout << "\n\n\t\t\t\t\t\tInvalid Choice\n"; 
    cout << "\t\t\t\t\t\tTry again...........\n\n"; 
    goto a; 
} //if inputed choice is other than given choice
Solution

  • There is no variable a linked to cout. The a: is a label that you can jump to with goto a;. The code could also be written like

    a:
  cout << "\t\t\t\t\t\tEnter your choice: ";
  cin >> i;
  if (i > 5 || i < 1) {
    cout << "\n\n\t\t\t\t\t\tInvalid Choice\n";
    cout << "\t\t\t\t\t\tTry again...........\n\n";
    goto a;
  } //if inputed choice is other than given choice

    Funny side note: why is

    void f()
{
  http://stackoverflow.com
  https://stackoverflow.com
}

    valid C? Because http and https are seen as labels and // starts a comment.