Dual Half Pyramid Star Pattern in C

Inverted and Upright Half Pyramid in C

This C program prints a symmetrical V-shaped pattern using asterisks (*). It first prints an inverted half pyramid followed by a normal half pyramid using nested for loops.

✅ C Program Code:

#include <stdio.h>

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

    // Inverted half pyramid
    for (int i = 1; i <= num; i++)
    {
        for (int j = i; j <= num; j++)
        {
            printf("* ");
        }
        printf("\n");
    }

    // Upright half pyramid
    for (int i = 1; i <= num; i++)
    {
        for (int j = i; j >= 1; j--)
        {
            printf("* ");
        }
        printf("\n");
    }
}
  

💡 Explanation:

• The first loop prints the inverted half pyramid (top part) with decreasing number of stars.
• The second loop prints the upright half pyramid (bottom part) with increasing number of stars.
• This creates a V-shaped pattern using asterisks.

💻 Sample Output:

Enter the number:
4
* * * *
* * *
* *
*
*
* *
* * *
* * * *

🔍 Keywords:

Star pattern in C, V star pattern, inverted pyramid in C, C pattern practice, nested loops C programs, symmetric pattern using C