Why do a Coder in the beginning keep on getting errors like "void value not ignored as it ought to be" in C++?

void value not ignored is an error caused when you try to assign an lvalue the result of a function returning void. Functions that return void do not return anything and can not be used as rvalues, they have no value. Functions that return void are side-effect only operations.

void myFunc() { /* do thing */ }
int main()
{
int a = myFunc(); // void value not ignored
return 0;
}