#include <stdio.h>
#include <stdlib.h> // for abs()
 
int main()
{
    int num, i, y;
 
    printf("Enter a number for generating the pyramid:\n");
    scanf("%d", &num);
 
    for (y = 0; y <= num; y++)
    {
        // print spaces
        for (i = 0; i < num - y; i++)
        {
            printf("   ");
        }
 
        // print numbers
        for (i = -y; i <= y; i++)
        {
            printf("%3d", abs(i));
        }
 
        printf("\n");
    }
 
    return 0;
}
 

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