View Code of Problem 57

#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    int blank,num,i,j;
    for(i=0;i<n;i++)
    {
        blank=n-i-1;
        while(blank--)
            printf(" ");
        for(j=1;j<=i+1;j++)
            printf("%d",j);
        for(j=i;j>=1;j--)
            printf("%d",j);
        printf("\n");
    }
    for(i=n-2;i>=0;i--)
    {
        blank=n-i-1;
        while(blank--)
            printf(" ");
        for(j=1;j<=i+1;j++)
            printf("%d",j);
        for(j=i;j>=1;j--)
            printf("%d",j);
        printf("\n");
    }
    return 0;
}