How can I do that using C programming language

Question

I want a code to do Pascal triangle pattern but with even numbers only

Answer 1

#include <stdio.h>

int main() {
    int n;

    printf("Enter the number of rows: ");
    scanf("%d", &n);

    for (int i = 0; i < n; i++) {
        // Print leading spaces for triangle alignment
        for (int j = 0; j < n - i - 1; j++) {
            printf("  ");
        }

        int val = 1; // first value in the row
        for (int j = 0; j <= i; j++) {
            // Print the value only if it's even, else print space
            if (val % 2 == 0)
                printf("%4d", val);
            else
                printf("    "); // space to maintain alignment

            // Calculate next value in row using Pascal's formula
            val = val * (i - j) / (j + 1);
        }
        printf("\n");
    }

    return 0;
}