#include <stdio.h>

int main( int argc, char *argv[ ])
{
    if (argc == 0)
        return -1;
    FILE* file = fopen(*argv, "rt");
    char* buffer = new char[4 * 1024];
    if (file != NULL && buffer != NULL)
    {
        int nCount = 0;
        while (fgets(buffer, 4 * 1024, file) != NULL)
            nCount ++;
        printf("the file %s contains %d rows.\n", *argv, nCount);
    }
    if (file != NULL)
        fclose(file);
    if (buffer != NULL)
        delete [] buffer;
    return 0;
}

#include <fstream>
#include <iostream>

main( int argc, char *argv[])
{
char buff[1024];
int  i=0;

if(argc < 3)
  {
   cout << "Usage: " << argv[0] << " [src_file] [dst_file]\n" << flush;
   return -1;
  }

ifstream src_file(argv[1],ios::nocreate);
if(!src_file) cout << "File " << argv[1] << " does not exist\n" << flush;
ofstream dst_file(argv[2],ios::noreplace);
if(dst_file) cout << "File " << argv[2]  << " already exist\n" << flush;

do{
src_file.getline(buff,1024);
i++;
if(i!=5) 
   dst_file << buff << "\n" << flush;
}while(src_file && dst_file);

return 0;
}