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

🚀 Programming Example

Logic to print the given number pattern

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💻 Practical Program

📘 Step Learning

Write a C program to print the given number pattern using for loop. How to print the given triangular number pattern using for loop in C programming. Logic to print the given number pattern using 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=1; i<=N; i++)
    {
        // Logic to print spaces
        for(j=1; j<=N-i; 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

Logic of the above pattern is simple and similar to the previous number pattern that we just printed. In this pattern we only need to add logic of printing extra trailing spaces before the number gets printed. You can hover on to the pattern to see or count total spaces printed per row. The total number of spaces printed per row is N - i (where N is the total number of rows to be printed and i is the current row number).
Step-by-step descriptive logic of the printing spaces:

To print spaces, run an inner loop from 1 to N - i. Inside this loop print single blank space.

Finally you are done, lets now implement this on code.

🎯 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
1 21 321 4321 54321

💻 Program Code

🖥 Program Output

📘 Explanation

Logic to print the given number pattern

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