Double-Sided Number Pyramid in C

Full Diamond Number Pattern in C

This C program prints a full diamond-like number pattern using nested for loops. It starts by printing numbers in increasing order and then prints them in decreasing order to form a symmetric structure.

✅ C Program Code:

#include <stdio.h>

int main()
{
    int num;
    printf("Enter the number:\n");
    scanf("%d", &num);

    // Top half
    for (int i = 1; i <= num; i++)
    {
        for (int j = 1; j <= i; j++)
        {
            printf("%d ", j);
        }
        printf("\n");
    }

    // Bottom half
    for (int i = num; i >= 1; i--)
    {
        for (int j = 1; j <= i; j++)
        {
            printf("%d ", j);
        }
        printf("\n");
    }
}
  

💡 Explanation:

• The first for loop builds the upper part of the diamond using increasing rows.
• The second for loop mirrors the top by printing decreasing rows.
• Each row prints numbers from 1 up to the current row index.

💻 Sample Output:

Enter the number:
3
1
1 2
1 2 3
1 2 3
1 2
1

🔍 Keywords:

Diamond number pattern in C, number pyramid in C, full pyramid C pattern, nested loops example in C, beginner pattern programs, mirror pyramid C