type of variable cpp code example

Example 1: print data type of a variable in c++

int x = 5;
typeid(x).name();
//output: i
// i stands for int

Example 2: variabvles in c++

#include <iostream>

using namespace std
  
int main{
	int x = 3;
    float g = 4.0;
    long h = 1234567;
    double j = 1237886.099;
    cout<<x<<endl;
    cout<<h<<endl;
    cout<<g<<endl;
    cout<<j<<endl;
}

Example 3: define type c++

typedef unsigned int u_int; //giving 'unsigned int' a name of u_int