ios manipulators hex() function in C++

ios manipulators boolalpha() function in C++

Last Updated : 28 Aug, 2019

The boolalpha() method of stream manipulators in C++ is used to set the boolalpha format flag for the specified str stream.

Syntax:

ios_base& boolalpha (ios_base& str)

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

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

Example 1:

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

Output:

boolalpha flag: true

Example 2:

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

Output:

boolalpha flag: false

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

ios manipulators hex() function in C++

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