C++/File/rename

Demonstrate rename() and remove().

<source lang="cpp">

1. include <iostream>
2. include <cstdio>
3. include <cstring>
4. 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;

}

 </source>