Check out example codes for "how to check datatype of a variable in c++". It will help you in understanding the concepts better.

Code Example 1

#include <typeinfo>
...
cout << typeid(variable).name() << endl;

Code Example 2

#include <typeinfo>
#include <iostream>

class someClass { };

int main(int argc, char* argv[]) {
    int a;
    someClass b;
    std::cout<<"a is of type: "<<typeid(a).name()<<std::endl; 
  	// Output 'a is of type int'
    std::cout<<"b is of type: "<<typeid(b).name()<<std::endl; 
  	// Output 'b is of type someClass'
    return 0;
  	// on the online compiler it comes as 'i' for int and 'c' for char
}

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