C++ How to make that a function runs only one

I use a C++\CLR project in visual studio 2017. At the time i try to manipulate the memory so i create a hack for a no name game and try to manipulate the game. In advance i want to apologize for my bad englisch.

My Problem is that i try to create a random integer and for that i use the function rand() in combination with firstSetRand srand().

using namespace System;

    int * randomName()
        {
    srand((unsigned)time(0));
        int i = 1;
        static int name[5];
        for (int i = 1; i < 5; i++)
            {
                name[i] = 97 + rand() % 122;
            }
            std::cout << name << std::endl;
            return name;
        }

this is my function for the random counts and here i call it:

int main(array<System::String ^> ^args)
{
while (true)
    {
      switch (inputCheat)   //check which case match with the user input
                {
                    case 4:
                        Console::WriteLine("test: ");
                        random:: randomName(firstSetRand);
                        //WriteProcessMemory(handle, (LPVOID)localName, &inputNumber, sizeof(), NULL); //Write to the local adress memory and change the value
                        Console::WriteLine("\nWhat did you want to cheat up: ");
                        break;
       }
    }
Sleep(200);
}

The Problem is because that´s a while(true) loop and i call the function mutipel times. And i dont know how to make that srand() function is only callt once time i get alwys the same random number.

I am new to C++ so pls apologizes ignorance. I am coming from java. In java i would do the whole code in a class and than i would write the variable in the constructor but i think thats not possibel in C++. Because when i do the whole code in a class i get the error:

Severity Code Description Project File Line Suppression State
Error LNK2019 unresolved external symbol _main referenced in function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ) AssaultCubeHack C:\Users\schup\source\repos\AssaultCubeHack\AssaultCubeHack\MSVCRTD.lib(exe_main.obj)   1

So i´am helpless i hope somebody can help me. And i want to say thanks in advance.