Demonstrate File random access. : fstream « File « C++

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C++ » File » fstreamScreenshots 
Demonstrate File random access.
 
#include <iostream> 
#include <fstream> 
#include <cstdlib> 
using namespace std; 
 
int main(int argc, char *argv[]) 

  if(argc != 3) { 
    cout << "Usage: CHANGE <filename> <byte>\n"
    return 1
  
 
  fstream out(argv[1], ios::in | ios::out | ios::binary)
  if(!out) { 
    cout << "Cannot open file.\n"
    return 1
  
 
  out.seekp(atoi(argv[2]), ios::beg)
 
  out.put('X')
  out.close()
 
  return 0
}

           
         
  
Related examples in the same category
1.fstream seekp: Seek file pointer position
2.Reverse file content
3.To read or write to a file, you include
4.Reverses the first N characters within a file
5.File Stream Objects as Function Arguments
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