#include <stdio.h>
int main() {
int size;
printf("Enter pyramid size: ");
scanf("%d", &size);
for (int i = 1, increment = 1; ; i += increment) {
if (i == 0) break;
for (int i2 = 0; i2 < size - i; i2++) printf(" ");
for (int i2 = 0; i2 < (2 * i) - 1; i2++) printf("*");
printf("\n");
if (i == size) increment = -1;
}
}