4ref_typecast.cpp

#include<iostream>
using namespace std;

int main(){
    //float, double and long literals
    float d = 43.2f;
    long double e = 43.2l;
    cout<<"The size of 43.2 is "<<sizeof(43.2f)<<endl;
    cout<<"The size of 43.2 is "<<sizeof(43.2F)<<endl;
    cout<<"The size of 43.2 is "<<sizeof(43.2l)<<endl;
    cout<<"The size of 43.2 is "<<sizeof(43.2L)<<endl;
    cout<<"The size of 43.2 is "<<sizeof(43.2)<<endl;

    //reference variables
    float a = 91.3;
    float & x = a;
    cout<<a<<endl;
    cout<<x<<endl;

    //typecasting : used to change the datatype of variables
    int k = 22;
    float n = 66.98;
    cout<<"\nThe value of k is "<<k<<endl;
    cout<<"The value of k is "<<(float)k<<endl;
    cout<<"The value of n is "<<n<<endl;
    cout<<"The value of n is "<<(int)n<<endl;
    cout<<"The sum of k and n is "<<k+(int)n<<endl;
    return 0;
}