Program to print numbers columns wise in C

In C programming, we can create patterns where natural numbers are arranged column-wise in a triangular format. This pattern displays numbers in columns, where each row contains one more number than the previous row.

Pattern Description

The pattern arranges numbers as follows −

1
2 6
3 7 10
4 8 11 13
5 9 12 14 15

Each number is placed based on its column position, creating a triangular arrangement where numbers flow vertically in columns.

Algorithm

The algorithm uses the following approach −

• i represents the current row (1 to 5)
• j represents the current column position in that row
• k stores the number to be printed
• For each row i, initialize k = i
• For each column j in that row, print k and update k = k + (5 - j)

Example

Here's the complete C program to print numbers in column-wise pattern −

#include <stdio.h>

int main() {
    int i, j, k;
    
    printf("Printing the Numbers in Columns wise:<br><br>");
    
    for(i = 1; i <= 5; i++) {
        k = i;
        for(j = 1; j <= i; j++) {
            printf("%d ", k);
            k += 5 - j;
        }
        printf("<br>");
    }
    
    return 0;
}

Printing the Numbers in Columns wise:

1 
2 6 
3 7 10 
4 8 11 13 
5 9 12 14 15 

How It Works

The pattern generation works as follows −

• Row 1: k=1, prints 1
• Row 2: k=2, prints 2, then k=2+(5-1)=6, prints 6
• Row 3: k=3, prints 3, then k=3+(5-1)=7, prints 7, then k=7+(5-2)=10, prints 10
• This pattern continues for all rows

Conclusion

This program demonstrates how to create column-wise number patterns using nested loops and mathematical calculations. The key is understanding how the increment value changes based on the current column position.