C++ Programs

 1. Program to print 

#include<iostream>
using namespace std;

int main()
{
cout << "Hello guys" << endl;
return 0;
}


2. Understanding DataTypes

// Integer -> 4bytes x 8bits = > 32bits
// Range (unsigned) = 0 to 2**32 - 1
// Range (signed) = -2**31 to 2**32 - 1
// MSB 1 - negative 0 - positive

// Float -> 4 bytes upto 7 decimal digits
// Double -> 8 bytes upto 15 decimal digits

// Character -> 1 byte -> uses ASCII values
// Bool -> 1 byte
#include<iostream>
using namespace std;

int main()
{
// int ascii = 'a';
// cout << ascii << endl;
int a;
a = 12;

cout << "Size of int " << sizeof(a) <<endl;


float b;
b = 12.0;

cout << "Size of float " << sizeof(b) <<endl;

char c;
c = 'a';

cout << "Size of Character " << sizeof(c) <<endl;


bool d;
d = true;

cout << "Size of Bool " << sizeof(d) <<endl;

/* Modifiers */

// Signed - 4 bytes
// Unigned - 4 bytes
// long - 8 bytes
// short - 2 bytes

short int s;
long int l;
cout << "Size of Short Int " << sizeof(s) <<endl;
cout << "Size of Long Int " << sizeof(l) <<endl;

return 0;
}


3. Greatest of three numbers

#include<iostream>
using namespace std;

// Greatest of the three numbers
int main() {
int a,b,c;
cin>>a>>b>>c;
if(a>b){
if(a>c){
cout<<a<<endl;
}else{
cout<<c<<endl;
}
}
else{
if(b>c){
cout<<b<<endl;
}else{
cout<<c<<endl;
}
}

}


4. Finding Even or Odd

#include<iostream>
using namespace std;

// Greatest of the three numbers
int main() {
int n;
cin>>n;
if(n%2==0){
cout<<"Even"<<endl;
}else{
cout<<"Odd"<<endl;
}
return 0;

}




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