C Program to Print Right Half Pyramid Pattern

The Right Half Pyramid Pattern is a triangular pattern consists of rows where each row contains an increasing number of characters. The number of characters starts from 1 and increases by 1 in each subsequent row. Characters are aligned to the left, resembling a right-angle triangle with its hypotenuse in right direction.

In this article, we will learn how to print a right half pyramid pattern in C.

#include <stdio.h>

int main() {
    int n = 5;

    // Outer loop to print all rows
    for (int i = 0; i < n; i++) {

        // Inner loop to print the * in each row
        for (int j = 0; j <= i; j++)
            printf("* ");
        printf("\n");
    }
}

#include <stdio.h>

int main() {
    int n = 5;

    // Outer loop to print all rows
    for (int i = 0; i < n; i++) {

        // Inner loop to print number in each row
        for (int j = 0; j <= i; j++)
            printf("%d ", j + 1);
        printf("\n");
    }
}

#include <stdio.h>

int main() {
    int n = 5;

    // Outer loop to print all rows
    for (int i = 0; i < n; i++) {

        // Inner loop to print alphabet in each row
        for (int j = 0; j <= i; j++)
            printf("%c ", j + 'A');
        printf("\n");
    }
}

Output

*           |   1           |   A
* *         |   1 2         |   A B
* * *       |   1 2 3       |   A B C
* * * *     |   1 2 3 4     |   A B C D
* * * * *   |   1 2 3 4 5   |   A B C D E

Explanation:

• Outer loop iterates over the rows, from i = 0 to i = n - 1.
• Inner loop prints the stars (*) (or number/character) on each row. The number of stars printed increases as i increases. On row i, it prints i + 1 stars.