Simple pro in c++

Do While Loop Program in C++

#include

#include

using namespace std;

int main()

{

       int a;

     cout<<"Enter the Number :";

     cin>>a;

     int counter = 1;

     do

     {

         cout<<"Execute Do While "<

         counter++;

     }

     while (counter <= a);

     getch();

     return 0;

 }

Output

Enter the Number :6

Execute Do While 1 time

Execute Do While 2 time

Execute Do While 3 time

Execute Do While 4 time

Execute Do While 5 time

Execute Do While 6 time

A Simple program without using functions

#include

#include

using namespace std;

int main()

{

   int number;

   int abs_number;

   cout << "This program finds the absolute value of an integer." << endl;

   cout << "Enter an integer (positive or negative): ";

   cin >> number;

    if(number >= 0)

   {

               abs_number = number;

   }

   else

               abs_number = -number;

   cout << "The absolute value of " << number << " is " << abs_number;

   cout << endl;

   return 0;

}

The same program using function

#include

#include

int abs(int i); 

int main()

{

   int number;

   int abs_number;

   cout << "This program finds the absolute value of an integer." << endl;

   cout << "Enter an integer (positive or negative): ";

   cin >> number;

   abs_number = abs(number);

   cout << "The absolute value of " << number << " is " << abs_number;

   cout << endl;

   return 0;

}

int abs(int i)

{

   if( i >= 0)

               return i;

   else

               return -i;

}

Formatted I/O using ios member functions

#include 

#include

using namespace std;

int main()

{

   float num[5] = {1.0, -1.2345, 2350.1, 23.4, 45.34};

   int i;

   cout.setf(ios::showpos); 

   cout.setf(ios::scientific); 

   cout.precision(2); 

   for(i = 0; i < 5; i++)

   {

               cout.width(20);    

               cout.fill('$');    

               cout << num[i] << endl;

   }

  return 0;

}

Formatted I/O using I/O manipulators

#include 

#include

#include 

using namespace std;

int main()

{

   float num[5] = {1.0, -1.2345, 2350.1, 23.4, 45.34};

   int i;

   cout << setiosflags(ios::showpos);

   cout << setiosflags(ios::scientific); 

   cout << setprecision(2); 

   for(i = 0; i < 5; i++)

   {

               cout << setw(20);    

               cout << setfill('$');    

               cout << num[i] << endl;

   }

  return 0;

}

Define your own I/O manipulators

#include 

#include

#include 

using namespace std;

ostream &sethex(ostream &stream);

int main()

{

   int input;

   cout << "Enter an integer: " ;

   cin  >> input;

   cout << "Hexdecimal is: ";

   cout << sethex << input << endl;

   return 0;

}

ostream &sethex(ostream &stream)

{

   stream.setf(ios::hex,ios::basefield); 

   return stream;

}