I started learning C++ and I made a simple thing like printing variables etc, but I wanted to make a new value on a variable like in Python:
test = "hello world"
print(test)
test = 5
print(test + 6)
So I had this:
string test = "hello world";
cout << test << "\n";
And now I wanted to assign a number to test, so I used int test = 5;, but I got an error:
redefinition of ‘test’ with a different type
Is it possible to assign a new type to a variable somehow?
>Solution :
is it possible to assign a new type to a variable somehow?
A new type, no. C++ is a statically typed language. Variable types are specified at compile-time and cannot change at runtime.
For what you are asking, the closest thing available is std::variant in C++17 and later, which is a fixed class type that can hold different kinds of values at runtime, eg:
#include <iostream>
#include <string>
#include <variant>
using myVariant = std::variant<int, std::string>;
void print(const myVariant &v)
{
std::visit([](const auto &x) { std::cout << x; }, v);
std::cout << "\n";
}
int main()
{
myVariant test;
test = "hello world";
print(test);
test = 5;
print(test);
return 0;
}