L1-039. Antique Typography

The ancient Chinese wrote characters vertically from right to left. In this question, you are asked to write a program to format a piece of text according to the ancient style.

Input format:

The input is given a positive integer N (<100) on the first line, which is the number of characters in each column. The second line gives a non-empty string of length up to 1000, terminated by a carriage return.

Output format:

Types the given string in archaic style, with N characters per column (except the last column may have fewer than N)

Input sample:

4
This is a test case

Sample output:

asa T
st ih
and tsi
 what s

---

Code:

#include<stdio.h>
#include<string.h>
char str[1000][1000],s[1010];
intmain()
{
    int i,j,n,m,k,t,l;
    scanf("%d",&n);
    getchar();
    gets(s);
    k=strlen(s);
    m=k/n;
    if(k%n!=0)
    {
        m++;
    }
    i=0;
        for(j=m-1;j>=0;j--)
        {
            for(l=0;l<n;l++)
            {
                if(s[i]!='\0')
                {
                    str[l][j]=s[i++];
                }
                else
                {
                    str[l][j]=' ';
                }
            }
        }
        for(i=0;i<n;i++)
        {
            for(j=0;j<m;j++)
            {
                printf("%c",str[i][j]);
            }
            printf("\n");
        }
    return 0;
}