C++ program for the diamond pattern using loops

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C++ program for the diamond pattern using loops

In this article, we will discuss the C++ program for the diamond pattern using loops

we can create star, number, alphabet, binary patterns using loops (for, while and do-while loop) in C++ programming language

In this post, we are going to learn how to create a diamond pattern in C++ language using the given symbol.

program for the diamond pattern

Program for the diamond pattern using for loop

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

Program 1

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

int main()
{
    char ch;
    int rows,i,j,Num_Of_space=1;
    cout<<"Enter the number of rows: ";
    cin>>rows;
    cout<<"Enter the symbol: ";
    cin>>ch;

    Num_Of_space=rows-1;

    for(i=1; i<=rows; i++){//outer for loop iterates through rows
        for(j=1; j<=Num_Of_space; j++)
            cout<<" ";//print space - inner for loop
            Num_Of_space--;

        for(j=1; j<=2*i-1; j++)
            cout<<ch;//print character

        cout<<"\n";//move to next line

    }

    Num_Of_space=1;
    for(i=1; i<=rows-1; i++){
            for(j=1; j<=Num_Of_space; j++)
            cout<<" ";//print space - inner for loop
    Num_Of_space++;

        for(j=1; j<=2*(rows-i)-1; j++)
            cout<<ch;//print charactor
            cout<<"\n";//mobe to next line

        }
        getch();

    return 0;
}

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

Program for the diamond pattern using while loop

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

Program 2

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

int main()
{
    char ch;
    int rows,i,j,Num_Of_space=1;
    cout<<"Enter the number of rows: ";
    cin>>rows;//takes input from the user for rows
    cout<<"Enter the symbol: ";
    cin>>ch;//Takes symbol from the user for pattern

    Num_Of_space=rows-1;
i=1;
    while(i<=rows){//outer while loop iterates through rows
            j=1;
        while(j<=Num_Of_space){
            cout<<" ";//print space - inner while loop
             j++;
        }
            Num_Of_space--;
j=1;
        while(j<=2*i-1){
            cout<<ch;//print character  -inner while loop
            j++;
        }
        cout<<"\n";
 i++;
    }

    Num_Of_space=1;
    i=1;
    while(i<=rows-1){
            j=1;
            while(j<=Num_Of_space){
            cout<<" ";//print space - inner while loop
     j++;
            }
    Num_Of_space++;
j=1;
        while(j<=2*(rows-i)-1){
            cout<<ch;
             j++;
        }
            cout<<"\n";
 i++;
        }
        getch();

    return 0;
}

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

Program for the diamond pattern using do-while loop

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

Program 3

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

int main()
{
    char ch;
    int rows,i,j,Num_Of_space=1;
    cout<<"Enter the number of rows: ";
    cin>>rows;//Takes input from the user for rows
    cout<<"Enter the symbol: ";
    cin>>ch;//Takes input from the user for pattern

    Num_Of_space=rows-1;
i=1;
    do{//outer do while loop  - print upper part
            j=1;
       do{//inner do while loop 1
            cout<<" ";//print space
             j++;
        } while(j<=Num_Of_space);
            Num_Of_space--;
j=1;
        do{//inner do while loop 2
            cout<<ch;//print given character
            j++;
        }while(j<=2*i-1);
        cout<<"\n";//move to next line
 i++;
    }while(i<rows);

    Num_Of_space=1;
    i=1;
    do{//outer do while loop - print inner part
            j=1;
            do{//inner do while loop 1
            cout<<" ";//print space
     j++;
            }while(j<=Num_Of_space);
    Num_Of_space++;
j=1;
        do{//inner do while loop 2
            cout<<ch;//print given character
             j++;
        }while(j<=2*(rows-i)-1);
            cout<<"\n";//move to next line
 i++;
        }while(i<=rows-1);
        getch();

    return 0;
}

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