Diamond number pattern in C++ language

Diamond number pattern in C++ language

In this tutorial, we will discuss a simple concept of the Diamond  number pattern in C++  language

In this post, we will learn how to create diamond number pattern

we can use for loop, while loop or do while loop to display different types of diamond  patterns in C++ language

Here, we will use for loop and nested for loop to print different type of number patterns

Program 1

Diamond number pattern in C++ language

Diamond  pattern 1

#include <iostream>

using namespace std;

int main()
{
    int rows;
    cout<<"Enter the number of rows: ";
    cin>>rows;
    int row=1,i,j,k;

for(i=rows/2; i>0; i--){    //print upper part
    for(j=1; j<=i; j++){
      cout<<" ";
}
for(j=1; j<=row; j++){
      cout<<row;
      cout<<" ";
}
cout<<"\n";//move to next line
row++;
}

for(i=0; i<=rows/2; i++){
  for(j=1; j<=i; j++){
      cout<<" ";
}

for(j=row; j>=1; j--){  //print lower part
      cout<<row;
      cout<<" ";
}
cout<<"\n";//move to next line
row--;
        }
    return 0;
}

 

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

Enter the number of rows: 8
        1
      2   2
    3   3  3
  4   4   4  4
5   5   5   5  5
  4   4   4  4
    3   3   3
      2   2
        1

 

Program 2

Diamond  pattern 2

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

int main()
{
    int i,j,k,l,rows;
    cout<<"|Enter the number of rows: ";
    cin>>rows;
    for(i=1; i<=rows; i++){    //print upper part
    for(j=1; j<=rows-i; j++){
      cout<<" ";//print initial space for upper part
}
for(k=i; k>=1; k--){
      cout<<k;
}
for(l=2; l<=i; l++){
      cout<<l;
}
cout<<"\n";//move to next line
}

for(i=rows-1; i>=1; i--){  //print lower part
    for(j=0; j<=rows-1-i; j++){
     cout<<" ";//print initial space for lower part
}
for(k=i; k>=1; k--){
      cout<<k;
}
for(l=2; l<=i; l++){
      cout<<l;
}
cout<<"\n";//move to next line
        }
        getch();
    return 0;
}

 

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

Enter the number of rows: 6
          1
        212
      32123
    4321234
  543212345
65432123456
  543212345
    4321234
      32123
        212
          1

 

Program 3

Diamond  pattern 3

#include <iostream>

using namespace std;

int main()
{
    int rows;
    cout<<"Enter the number of rows: ";
    cin>>rows;
    int row=1,i,j,k;

for(i=1; i<=rows; i++){    //print upper part
    for(j=1; j<=rows-i; j++){
      cout<<" ";//print space
}
for(k=1; k<=i; k++){
      cout<<k;
      cout<<" ";
}
cout<<"\n";//move to next line
}

for(i=1; i<=rows-1; i++){  //print lower part
    for(j=1; j<=i; j++){
      cout<<" ";
}
for(k=1; k<=rows-i; k++){
      cout<<k;
      cout<<" ";
}
cout<<"\n";//move to next line
        }
    }

 

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

Enter the number of rows: 6
         1
       1  2
     1  2  3
   1  2  3  4
  1  2  3  4  5
1  2  3  4  5  6
  1  2  3  4  5
    1  2  3  4
      1  2  3 
        1  2
          1

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