Growing Sequences

#include<stdio.h>
int main()
{
    int x,i;
    while(1)
    {
        scanf("%d",&x);
        if(x!=0)
        {
            printf("1");
            for(i=2; i<=x; i++)
            {
                printf(" %d",i);
            }

            printf("\n");
        }
        else
            break;

    }

    return 0;
}