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

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

In this article, we will discuss the concept of C++ program to print Parallelogram and hollow Parallelogram star pattern using for loop

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

 

Display parallelogram  star patterns Using for loop

Code to print 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    pattern using for loop in C++ programming language

#include <iostream>
#include <conio.h>
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";

for(i=1; i<=rows; i++){//outer for loop
   for(j=1; j<=rows-i; j++){//inner for loop
   cout<<" ";//print space
   }
   for(j=1; j<=columns; j++){//inner for loop
   cout<<ch;//print symbol after space
}
 cout<<"\n";//move to next line
}
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  star  pattern using for 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";

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

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

 

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