Program to print the given number pattern 5 45 345 2345 12345

🚀 Programming Example

Program 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 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 numbers
        for(j=i; j<=N; j++)
        {
            printf("%d", j);
        }

        printf("\n");
    }

    return 0;
}

🖥 Program Output

Enter N: 5
5
45
345
2345
12345

📘 Explanation

Logic to print the given number pattern

In the above pattern there are N rows (where N is the total number of rows to be printed). As you know that to iterate N times, you can either go from 1-N or from N-1. Here in our case we will iterate though rows from N-1, since the pattern printed is in descending order. Each row contains exactly N - i + 1columns (where i is the current row number).
Step-by-step descriptive logic:

To iterate through rows, run an outer loop from N to 1 in decreasing order.
To print columns, run an inner loop from i to N (where i is the current row number). 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.

Program to print the given number pattern
5 45 345 2345 12345

💻 Program Code

🖥 Program Output

📘 Explanation

Logic to print the given number pattern

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