Lecture2.cpp

//#include<iostream>                 // cout code is in <iostream>
//using namespace std;               // cout is namespace of std. 

//int main(){                        // starting of the programme 

    //cout<<"Namaste duniya :-) "<<endl; 
/*  
    (<<) - used for displaying the program 
    (endl & \n) -  used for new line 
    (;) - used for ending the line 

    int a = 123;            // int takes 4 bytes and 1 byte = 8 bits 
    cout<<a<<endl;          // max = 2^32-1 , min = 0 for positive int

    char ch = 'v';          // char takes 1 bytes and 1 byte = 8 bits
    cout<<ch<<endl;         // max = 2^8-1 , min = 0 for positive char

    float f = 1.2;
    cout<<f<<endl;

    double d = 1.22;
    cout<<d<<endl;

    int size = sizeof(d);
    cout<<size<<endl;

    int a = 'a';        here a prints 97 as the ascii value of 'a' is 97
    cout<<a<<endl;
    
    char ch = 98;       here ch prints b as the ascii value of 98 is b
    cout<<ch<<endl;
    
    char ch1 = 123456;  as the big int value can store in memory of char so last bit value of char will print 
    cout<<ch1<<endl;

    unsigned int a = -122;    here only 122 will be printed as it is unsigned int 
    cout<<a<<endl;

    int a = -122;
    cout<<a<<endl;

    int a = 2/5;          here 0 will be printed becoz datatype of a is int & int/int = int 
    cout<<a<<endl;

    int a = 2.0/5;          here 0 will be printed becoz datatype of a is int & float/int = float 
    cout<<a<<endl; 

    int a = 3;
    int b = 4;
    bool first = (a==b);       
    cout<<first<<endl;         here false(0) is printed 
 
    int a = 0;           here 1 will print as ! changes 1->0 and 0->1 
    cout<<!a<<endl;
*/
//}