Program to print parallelogram pattern in c++ language using while

Karmehavannan

4 years ago

Program to print parallelogram pattern in c++ language

In this article, we will discuss the concept of Program to print parallelogram pattern in c++ language using while loop

In this post, we are going to learn how to write a program to print parallelogram and Hollow parallelogram pattern using while loop in C++ language.

Display parallelogram star patterns Using while loop

Code to print Parallelogram star pattern

C++ program to print Parallelogram star pattern using for loop — Parallelogram star pattern

Program 1

This program allows the user to enter the number of rows , columns and any symbol then it will display the parallelogram star pattern using while loop in C++ programming language

#include <iostream>
#include <conio.h>
using namespace std;

using namespace std;

int main() {
    int i,j,rows,columns;
    //integer variable declaration
    char ch;
    //char variable declaration
    cout<<"Enter the number of rows\n";
    //Ask input from the user to rows
cin>>rows;
//Store the row in the rows variable entered by user
 cout<<"Enter the number of columns\n";
//Ask input from the user to columns
cin>>columns;
//Store the column in the columns variable entered by user
cout<<"Enter the character for pattern\n";
  //Ask input from the user to character
cin>>ch;
//Store the char in the character variable entered by user
cout<<"\n";
i=1;
while(i<=rows){//outer for loop
        j=1;
   while(j<=rows-i){//inner for loop
   cout<<" ";//print space
 j++;
   }
   j=1;
   while(j<=columns){//inner for loop
   cout<<ch;//print symbol after space
    j++;
}
 cout<<"\n";//move to next line
  i++;
}
getch();
    return 0;
}

When the above code is executed, it produces the following result

Code to print Hollow Parallelogram star pattern

Program 2

This program allows the user to enter the number of rows , columns and any symbol then it will display the Hollow parallelogram pattern using while loop in C++ programming language

#include <iostream>
#include <conio.h>
using namespace std;
int main() {
    int i,j,rows,columns;
    char ch;
    cout<<"Enter the number of rows\n";
    cin>>rows; //store the user input- rows
    cout<<"Enter the number of columns\n";
cin>>columns; //store the user input- columns
cout<<"Enter the character for pattern\n";
cin>>ch;
cout<<"\n";

i=1;
while(i<=rows){//outer while loop
        j=1;
   while(j<=rows-i){//inner while loop
   cout<<" ";//print space
 j++;
   }
   j=1;
   while(j<=columns){//inner for loop
   if(i==1 || i==rows || j==1 || j==columns){
   cout<<ch;//print symbol after space
   }
   else{
         cout<<" ";//print space
   }
    j++;
}
 cout<<"\n";//move to next line
  i++;
}
getch();
    return 0;
}

When the above code is executed, it produces the following result