Ultimate-C-Programming-Programs/Program_42.c at main · Dhruv-kundu/Ultimate-C-Programming-Programs · GitHub

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// Program 42: Write a program to print a butterfly pattern.
// *      *
// **    **
// ***  ***
// ********
// ********
// ***  ***
// **    **
// *      *
#include <stdio.h>

int main() {
    int n = 4;   // size of butterfly

    // Upper half
    for (int i = 1; i <= n; i++) {
        // Left stars
        for (int j = 1; j <= i; j++)
            printf("*");

        // Spaces
        for (int j = 1; j <= 2*(n - i); j++)
            printf(" ");

        // Right stars
        for (int j = 1; j <= i; j++)
            printf("*");

        printf("\n");
    }

    // Lower half
    for (int i = n; i >= 1; i--) {
        // Left stars
        for (int j = 1; j <= i; j++)
            printf("*");

        // Spaces
        for (int j = 1; j <= 2*(n - i); j++)
            printf(" ");

        // Right stars
        for (int j = 1; j <= i; j++)
            printf("*");

        printf("\n");
    }

    return 0;
}