Print perfect square spiral number pattern<pre>1 2 3 4 5 620 21

🚀 Programming Example

Print perfect square spiral number pattern

1    2    3    4    5    620   21   22   23   24   719   32   33   34   25   818   31   36   35   26   917   30   29   28   27   1016   15   14   13   12   11

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💻 Practical Program

📘 Step Learning

Write a C program to print the perfect square number pattern series using for loop. How to print perfect square number pattern using for loop in C programming.

📌 Information & Algorithm


1    2    3    4    5    6    7    8    9    10
36   37   38   39   40   41   42   43   44   11
35   64   65   66   67   68   69   70   45   12
34   63   84   85   86   87   88   71   46   13
33   62   83   96   97   98   89   72   47   14
32   61   82   95   100  99   90   73   48   15
31   60   81   94   93   92   91   74   49   16
30   59   80   79   78   77   76   75   50   17
29   58   57   56   55   54   53   52   51   18
28   27   26   25   24   23   22   21   20   19

💻 Program Code

/**
 * C program to print perfect square number pattern
 */

#include <stdio.h>

#define SIZE 6 // Size is always even

int main()
{
    int i, j, N;
    int board[SIZE][SIZE];
    int left, top;

    left = 0;
    top  = SIZE - 1;
    N    = 1;

    for(i=1; i<=SIZE/2; i++, left++, top--)
    {
        // Fill from left to right
        for(j=left; j<=top; j++, N++)
        {
            board[left][j] = N;
        }

        // Fill from top to down
        for(j=left+1; j<=top; j++, N++)
        {
            board[j][top] = N;
        }

        // Fill from right to left
        for(j=top-1; j>=left; j--, N++)
        {
            board[top][j] = N;
        }

        // Fill from down to top
        for(j=top-1; j>=left+1; j--, N++)
        {
            board[j][left] = N;
        }
    }

    // Print the pattern
    for(i=0; i<SIZE; i++)
    {
        for(j=0; j<SIZE; j++)
        {
            printf("%-5d", board[i][j]);
        }
        printf("\n");
    }

    return 0;
}

🖥 Program Output

1    2    3    4    5    6    7    8    9    10
36   37   38   39   40   41   42   43   44   11
35   64   65   66   67   68   69   70   45   12
34   63   84   85   86   87   88   71   46   13
33   62   83   96   97   98   89   72   47   14
32   61   82   95   100  99   90   73   48   15
31   60   81   94   93   92   91   74   49   16
30   59   80   79   78   77   76   75   50   17
29   58   57   56   55   54   53   52   51   18
28   27   26   25   24   23   22   21   20   19

📘 Explanation

Required knowledge:

Basic C programming ,? Loop , Array

Note:?If you want to generate the perfect square of any number other than 10. Then you only need to change this line?#define SIZE 10?to any other integer.

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.

Print perfect square spiral number pattern
1 2 3 4 5 620 21 22 23 24 719 32 33 34 25 818 31 36 35 26 917 30 29 28 27 1016 15 14 13 12 11

📌 Information & Algorithm

💻 Program Code

🖥 Program Output

📘 Explanation

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🎯 How to learn from this example

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📚 Related Programs

Print perfect square spiral number pattern1 2 3 4 5 620 21 22 23 24 719 32 33 34 25 818 31 36 35 26 917 30 29 28 27 1016 15 14 13 12 11

📌 Information & Algorithm

💻 Program Code

🖥 Program Output

📘 Explanation

Master Programming Through Practical Examples

🎯 How to learn from this example

🔥 Practice suggestion

⚡ Quick Practice Flow

📚 Related Programs

Print perfect square spiral number pattern
1 2 3 4 5 620 21 22 23 24 719 32 33 34 25 818 31 36 35 26 917 30 29 28 27 1016 15 14 13 12 11