C++/Data Type/Bool

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Define and use bool value

<source lang="cpp">

  1. include <iostream>

using namespace std; int main() {

 bool outcome;
 outcome = false;
 if(outcome)
   cout << "true";
 else 
   cout << "false";
 return 0;

}


      </source>


Demonstrate bool values.

<source lang="cpp">


  1. include <iostream>

using namespace std;

int main() {

 bool b; 

 b = false; 
 cout <<  "b is " << b << endl; 

 b = true; 
 cout <<  "b is " << b << endl; 

 
 if(b)                               // control the if statement 
    cout <<  "This is executed.\n"; 

 b = false; 
 if(b) 
    cout <<  "This is not executed.\n"; 

 // outcome of a relational operator is a true/false value 
 cout <<  "10 > 9 is " << (10 > 9) << endl; 

 return 0; 

}

      </source>