Looping Program Examples

Example : A C++ program to display all the values from 1 to 10 using for loop.

# include <iostream>
using namespace std;

int main ()
{
   for( int i = 1; i <= 10; i = i + 1 )
   {
      cout << "The values are : " << i <<endl;
   }	
return 0;
}

--------------  OR  --------------
# include <iostream>
using namespace std;

int main ()
{
   int j=10;

   for( int i = 1; i <= j; i = i + 1 )
   {
      cout << "The values is: " << i <<endl;
   }
	
return 0;
}

Output :
The values is: 1
The values is: 2
The values is: 3
The values is: 4
The values is: 5
The values is: 6
The values is: 7
The values is: 8
The values is: 9
The values is: 10

Example : A C++ program to display all the values from 1 to 10 using while loop.

# include <iostream>
using namespace std;

int main ()
{
   int i = 1;
   while(i <= 10 )
   {
      cout<<"The values is : " << i <<endl;
      i = i + 1 ;
   }	
return 0;
}

Example : A C++ program to display all the values from 1 to 10 using do-while loop.

# include <iostream>
using namespace std;

int main ()
{
   int i ;
   i=1;
   do
   {
      cout << "The values is : " << i <<endl;
      i = i + 1 ;
   } while(i <= 10 );	
return 0;
}

Example : A C++ program to display all the values from given two values of the interval of 2.

# include <iostream>
using namespace std;

int main ()
{
   int min, max;
   cout<<" Enter any two values to display all the numbers : \n";
   cin>>min>>max;
   
   if(min<max)
     {
	    for( int i = min; i <= max; i = i + 2 )
	     {
	      cout << "The values are : " << i <<endl;
	     }
     } 
   else 
     {
   	    for( int i = min; i >= max; i = i - 2 )
	     {
	      cout << "The values are : " << i <<endl;
	     }
     } 
   	
return 0;
}
Output :
Enter any two values to display all the numbers :
20
10
The values are : 20
The values are : 18
The values are : 16
The values are : 14
The values are : 12
The values are : 10

--------------------------------
Process exited after 10.91 seconds with return value 0
Press any key to continue . . .

Example : A C++ program to display all the values, from given two values by the user dynamically.

# include <iostream>
  using namespace std;
int main ()
{
   int min, max;
   cout<<"Enter the first Minimum and second Maximum value to display all the numbers : \n";
   cin>>min>>max;   
   for( int i = min; i <= max; i = i + 1 )
   {
      cout << "The values are : " << i <<endl;
   }	
return 0;
}

Output :
Enter the first Minimum and second Maximum value to display all the numbers :
10
20
The values are : 10
The values are : 11
The values are : 12
The values are : 13
The values are : 14
The values are : 15
The values are : 16
The values are : 17
The values are : 18
The values are : 19
The values are : 20

Example : A C++ program to display all the values from 10 to 1 using for loop.

# include <iostream>
using namespace std;

int main ()
{
   for( int i = 10; i >= 1; i = i - 1 )
   {
      cout << "The values is : " << i <<endl;
   }	
  return 0;

}
Output :
The values is : 10
The values is : 9
The values is : 8
The values is : 7
The values is : 6
The values is : 5
The values is : 4
The values is : 3
The values is : 2
The values is : 1

Example : A C++ program to display all the values, from given any two user’s values, using for loop.

# include <iostream>
using namespace std;
int main ()
{
   int min, max;
   cout<<" Enter any two values to display all the numbers : \n";
   cin>>min>>max;   
   if(min<max)
      {
	    for( int i = min; i <= max; i = i + 1 )
	     {
	      cout << "The values are : " << i <<endl;
	     }
      } 
   else 
      {
   	    for( int i = min; i >= max; i = i - 1 )
	     {
	      cout << "The values are : " << i <<endl;
	     }
      }   	
   return 0;
}

Example : A C++ program to display all the values using nested homogeneous for loop.

# include <iostream>
using namespace std;

int main ()
{
   for(int i=1;i<=3;i++)
   {      
      for(int j=1;j<=3;j++)
	  {      
        cout<<i<<"  "<<j<<"\n";      
      }
	  cout<<"\n";     
   }	
   return 0;
}

Example : A C++ program to display all the values using nested heterogeneous loop.

# include <iostream>
using namespace std;
int main ()
{   
   for(int i=1;i<=3;i++)
   {      
          int j=1;
	  while(j<=3)
	  {      
            cout<<i<<"  "<<j<<"\n";
	    j=j+1;      
          }
	  cout<<"\n";     
   }	
   return 0;
}
Output :
1  1
1  2
1  3

2  1
2  2
2  3

3  1
3  2
3  3