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/