tut1.cpp

#include <iostream>
using namespace std;

// int c = 58;

int main()
{
    //******** Build in data types********
    // int a, b, c;
    // cout<<"Enter the value of a: "<<endl;
    // cin>>a;
    // cout<<"Enter the value of b: "<<endl;
    // cin>>b;
    // c = a+b;
    // cout<<"The sum of a and b is: "<<c<<endl;
    // cout<<"The global c is: "<<::c<<endl;

    //********Float, Double and Long Double Literals********
    // float d = 3.14f;
    // long double e = 3.14l;

    // cout<<"The size of 3.14 is: "<<sizeof(3.14)<<endl;
    // cout<<"The size of 3.14f is: "<<sizeof(3.14f)<<endl;
    // cout<<"The size of 3.14F is: "<<sizeof(3.14F)<<endl;
    // cout<<"The size of 3.14l is: "<<sizeof(3.14l)<<endl;
    // cout<<"The size of 3.14L is: "<<sizeof(3.14L)<<endl;
    // cout<<"The size of d is: "<<d<<endl<<"The size of e is: "<<e<<endl;

    //********Reference Variables********
    // here y is a refernce variable Pointing towards x

    // float x = 455;
    // float & y = x;
    // cout<<x<<endl;
    // cout<<y<<endl;

    //********Typecasting********
    //changing one variable type to another

    // int a = 45;
    // float b = 45.45;

    // cout<<"The value of a is: "<<(float)a<<endl;
    // cout<<"The value of a is: "<<float(a)<<endl;

    // cout<<"The value of b is: "<<(int)b<<endl;
    // cout<<"The value of b is: "<<int(b)<<endl;

    // int c = int(b);

    // cout<<"The expression is: "<< a + b <<endl;
    // cout<<"The expression is: "<< a + int(b) <<endl;
    // cout<<"The expression is: "<< a + (int)b <<endl;

    return 0;
}