Demonstrate rename() and remove(). : rename « File « C++

1. C++
2. File
3. rename

Demonstrate rename() and remove().

  
#include <iostream>
#include <cstdio>
#include <cstring>
#include <fstream>

using namespace std;

int main(int argc, char *argv[]){
  int result;

  if(argc != 2) {
    printf("usage: EraseRenname <erase/rename>\n");
    exit(1);
  }

  ofstream fout("test.dat");

  if(!fout) {
    cout << "Cannot open test.dat file.\n";
    return 1;
  }

  fout << "Write some data to the file.";

  fout.close();

  if(!fout.good()) {
    cout << "Error writing to or closing file.\n";
    return 0;
  }

  if(!strcmp("erase", argv[1])) {
    result = remove("test2.dat");
    if(result) {
      cout << "Cannot remove file.\n";
      return 1;
    }
  } else if(!strcmp("rename", argv[1])) {
    result = rename("test.dat", "test2.dat");
    if(result) {
      cout << "Cannot rename file.\n";
      return 1;
    }
  } else
    cout << "Invalid command-line argument.\n";

  return 0;
}
  
    
  

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