Unit 31.7

#define _CRT_SECURE_NO_WARINGS

#include <stdio.h>


int main()

{

    int i,k,num1;

    

    scanf("%d", &num1);

    

    for (i = 1; i <= num1; i++)

    {

        for(k = 1; k <= (2 * num1 -1); k++)

        {

            if(num1 > i - k && num1 < i+k )

                printf("*");

            else

                printf("");

        }

        printf("\n");  

    }

    

    return 0;

}