star.c

#include <stdio.h>

int main() {
    int base = 50;
    int ls = base/2;
    int ms = 0;

    for (int i=0; i < (base/2)+1; i++) {
        if (i == base/2) {
            for (int j=0; j < base; j++) {
                printf("*");
            }

            if (base % 2 == 0) {
                printf("*");
            }

            continue;
        }

        for (int j=0; j < ls; j++) {
            printf(" ");
        }

        printf("*");

        if (ls == base/2) {
            printf("\n");
        } else {
            for (int k=0; k < ms; k++) {
                printf(" ");
                if (k == ms-1) {
                    printf("*\n");
                }
            }
        }

        ls--;
        ms++;
        if (i > 0) ms++;
    }

    printf("\n");

    return 0;
}