Print Full Diamond Shape Pyramid

1#include <stdio.h>
2
3int main() {
4    int rows;
5    
6    printf("Enter number of rows: ");
7    scanf("%d", &rows);
8    
9    // Upper half
10    for (int i = 1; i <= rows; i++) {
11        for (int j = 1; j <= rows - i; j++)
12            printf(" ");
13        for (int k = 1; k <= 2 * i - 1; k++)
14            printf("*");
15        printf("\n");
16    }
17    
18    // Lower half
19    for (int i = rows - 1; i >= 1; i--) {
20        for (int j = 1; j <= rows - i; j++)
21            printf(" ");
22        for (int k = 1; k <= 2 * i - 1; k++)
23            printf("*");
24        printf("\n");
25    }
26    
27    return 0;
28}