麻烦帮忙看看这段程序，改成C语言~多谢

麻烦帮忙看看这段程序，改成C语言~谢谢
按照这段程序的方法，不要改算法什么的，然后改成C~谢谢

Java code

import java.io.*;public class Pretty{  public static final int LINE_SIZE = 5;    public static void main(String[] parms)  {    BufferedReader fileIn;    PrintWriter fileOut;    String inputLine;    int position;        try    {      fileIn = new BufferedReader(new FileReader("in.txt"));      fileOut = new PrintWriter(new FileWriter("out.txt"));            inputLine = fileIn.readLine();      position = 1;      while (inputLine != null)      {        if (inputLine.equals(""))        {          if (position > 1)          {            fileOut.println();          }                    fileOut.println();          position = 1;        }                else        {          if ((position+inputLine.length()-1) > LINE_SIZE)          {            fileOut.println();            position = 1;          }          fileOut.print(inputLine);                    position += inputLine.length();          if (position <= LINE_SIZE)          { // add a blank after the current word            fileOut.print(" ");            position++;          }        }                inputLine = fileIn.readLine();      }            fileIn.close();      fileOut.close();    }        catch (IOException ioe)    {      System.out.println(ioe.getMessage());      ioe.printStackTrace();    }  }}

C/C++ code

#include <string.h>#include <stdio.h>#define LINE_CHARS    80#define LINE_SIZE    5int main(int argc, char* argv[]){    FILE* fileIn;    FILE* fileOut;    char inputLine[LINE_CHARS];    int position;    fileIn = fopen("in.txt", "rt");    fileOut = fopen("out.txt", "wt");    if(fileIn == NULL || fileOut == NULL)        return -1;    fgets(inputLine, LINE_CHARS, fileIn);    position = 1;    while(!feof(fileIn))    {        if(strlen(inputLine) > 0)            {                  if(position > 1)                fprintf(fileOut, "\n");                            fprintf(fileOut, "\n");                  position = 1;            }            else            {                  if((position + strlen(inputLine) - 1) > LINE_SIZE)                  {                        fprintf(fileOut, "\n");                        position = 1;                  }                  fprintf(fileOut, "%s\n", inputLine);            position += strlen(inputLine);            if(position <= LINE_SIZE)            {                fprintf(fileOut, " ");                position++;            }        }        fgets(inputLine, LINE_CHARS, fileIn);    }          fclose(fileIn);    fclose(fileOut);    return 0;    }
[解决办法]
这里if(strlen(inputLine) > 0)看错了，不好意思，把这句改为if(strlen(inputLine) == 0)就行了。