Logic to print the given number pattern 54321 4321 321 21 1

🚀 Programming Example

Logic to print the given number pattern

👁 6,305 Views

💻 Practical Program

📘 Step Learning

Write a C program to print the given number pattern using loop. How to print the given number pattern using for loop in C programming. Logic to print the given number pattern using for loop in C program.

💻 Program Code

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

#include <stdio.h>

int main()
{
    int i, j, N;

    printf("Enter N: ");
    scanf("%d", &N);

    for(i=N; i>=1; i--)
    {
        // Logic to print spaces
        for(j=i; j<=N-1; j++)
        {
            printf(" ");
        }

        // Logic to print numbers
        for(j=i; j>=1; j--)
        {
            printf("%d", j);
        }

        printf("\n");
    }

    return 0;
}

🖥 Program Output

📘 Explanation

Logic to print the given number pattern

If you look to the above pattern you will find that the logic to print the numbers are similar as the previous pattern. Hence, we only need to write the logic to print the trailing spaces that gets printed before the number. You can hover on to the pattern to see or count the number of spaces per row. Total number of spaces per row is N - i (where N is the total number of rows and i is the current row number). Note that i loops in decreasing order i.e. at row1 i=5, at row2 i=4 and so on.
Step-by-step descriptive logic to print spaces:

To print spaces, run an inner loop from i to N - 1. Inside this loop print the value of j (where j is the current column number).

🎯 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.

Logic to print the given number pattern
54321 4321 321 21 1

💻 Program Code

🖥 Program Output

📘 Explanation

Logic to print the given number pattern

Master Programming Through Practical Examples

🎯 How to learn from this example

🔥 Practice suggestion

⚡ Quick Practice Flow

📚 Related Programs