C++ hollow diamond star pattern programs

Table of Contents

C++ hollow diamond star pattern programs

In this article, we will discuss the C++ hollow diamond star pattern programs- using loops

In this post, we will learn how to create a the diamond star pattern using for, while and do-wile loop in C++ language

Hollow diamond star pattern using for loop

Program 1

This program allows the user to enter the number of rows and the symbol then the program displays the hollow diamond star pattern with the given symbol using for loop in C++ language

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

int main()
{
     int i,j,rows;
     char ch;
    cout<<"Enter the number of rows: \n";
cin>>rows;//takes input from user for rows
    cout<<"Enter symbol: \n";
    cin>>ch;//takes input character from user


for(i=1; i<=rows; i++){
    for(j=rows; j>i; j--){
     cout<<" ";
  }
  cout<<ch;
  for(j=1; j<(i-1)*2; j++){
     cout<<" ";
  }
  if(i==1){
    cout<<"\n";
  }
  else{
    cout<<ch<<"\n";

  }
}

for(i=rows-1; i>=1; i--){
    for(j=rows; j>i; j--){
     cout<<" ";
  }
  cout<<ch;
  for(j=1; j<(i-1)*2; j++){
    cout<<" ";
  }
  if(i==1){
    cout<<"\n";
  }
  else{
    cout<<ch;
    cout<<"\n";
  }
  }
getch();
    return 0;
}

When the above code is executed it produces the following result

Hollow diamond star pattern using while loop

Program 1

This program allows the user to enter the number of rows and the symbol then the program displays the hollow diamond star pattern with the given symbol using while loop in C++ language

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

int main()
{
     int i,j,rows;
     char ch;
    cout<<"Enter the number of rows: \n";
cin>>rows;
    cout<<"Enter symbol: \n";
    cin>>ch;

i=1;
while( i<=rows){
        j=rows;
    while(j>i){
     cout<<" ";

     j--;
  }
  cout<<ch;
j=1;
  while(j<(i-1)*2){
     cout<<" ";
      j++;
  }
  if(i==1){
    cout<<"\n";
  }
  else{
    cout<<ch<<"\n";

  }
  i++;
}
i=rows-1;
while(i>=1){
        j=rows;
    while(j>i){
     cout<<" ";
 j--;
  }
  cout<<ch;
  j=1;
  while(j<(i-1)*2){
    cout<<" ";
    j++;
  }
  if(i==1){
    cout<<"\n";
  }
  else{
    cout<<ch;
    cout<<"\n";
  }
  i--;
  }
getch();
    return 0;
}

When the above code is executed it produces the following result

Hollow diamond star pattern using do while loop

Program 3

This program allows the user to enter the number of rows and the symbol then the program displays the hollow diamond star pattern with the given symbol using the do-while loop in C++ language

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

int main()
{
     int i,j,rows;
     char ch;
    cout<<"Enter the number of rows: \n";
cin>>rows;
    cout<<"Enter symbol: \n";
    cin>>ch;

i=1;
do{
        j=rows;
    do{
     cout<<" ";

     j--;
  }while(j>=i);
  cout<<ch;
j=1;
  do{
     cout<<" ";
      j++;
  }while(j<(i-1)*2);
  if(i==1){
    cout<<"\n";
  }
  else{
    cout<<ch<<"\n";

  }
  i++;
}while( i<=rows);
i=rows-1;
do{
        j=rows;
    do{
     cout<<" ";
 j--;
  }while(j>=i);
  cout<<ch;
  j=1;
  do{
    cout<<" ";
    j++;
  }while(j<(i-1)*2);
  if(i==1){
    cout<<"\n";
  }
  else{
    cout<<ch;
    cout<<"\n";
  }
  i--;
  }while(i>=1);
getch();
    return 0;
}

When the above code is executed it produces the following result