ios manipulators unitbuf() function in C++

ios manipulators oct() function in C++

Last Updated : 02 Sep, 2019

The oct() method of stream manipulators in C++ is used to set the baseline format flag for the specified str stream. This flag sets the baseline for Octal numbers. Hence the output shows the number in Octal base.

Syntax:

ios_base& oct (ios_base& str)

Parameters: This method accepts str as a parameter which is the stream for which the format flag is affected.

Return Value: This method returns the stream str with internal format flag set.

Example 1:

// C++ code to demonstrate 
// the working of oct() function 
  
#include <iostream> 
  
using namespace std; 
  
int main() 
{ 
  
    // Initializing the number 
    int n = 321; 
  
    // Using oct() 
    cout << "oct flag: "
         << oct << n << endl; 
  
    return 0; 
} 

Output:

oct flag: 501

Example 2:

// C++ code to demonstrate 
// the working of oct() function 
  
#include <iostream> 
  
using namespace std; 
  
int main() 
{ 
  
    // Initializing the number 
    int n = -321; 
  
    // Using oct() 
    cout << "oct flag: "
         << oct << n << endl; 
  
    return 0; 
} 

Output:

oct flag: 37777777277

Reference: http://www.cplusplus.com/reference/ios/oct/

ios manipulators unitbuf() function in C++

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