Write a program of Logical Expressions in C++

In C++ Language
if a value is zero, it can be used as the logical value false.
if a value is not zero, it can be used as the logical value true.

There is three type of logical operator
1.  Not operator ( ! )
     This unary operator convert true to false and false to true.
2.  And ( && )
     The result of This Binary operator is true only when
     both operator is true; it is false in all other case.
3.  Or ( || )
     The result is false if both oprands are false; its true all other case.

Demonstrates the result of logical operator

Input:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

#include <iostream.h> #include <conio.h> int main() { cout <<" 5 && - 3 is: " << ( 5 && - 3)<< endl; cout <<" 5 && 0 is: " << ( 5 && 0)<< endl; cout <<" 0 && 5 is: " << ( 0 && 5)<< endl; cout <<" 5 || 0 is: " << ( 5 || 0)<< endl; cout <<" 0 || 5 is: " << ( 0 || 5)<< endl; cout <<" 0 || 0 is: " << ( 0 || 0)<< endl; cout <<" !5 && !0 is: " << (!5 || !0)<< endl; cout <<" !5 || !0 is: " << (!5 || !0)<< endl; cout <<" !5 || 0 is: " << (!5 || 0)<< endl; cout <<" 5 || !0 is: " << ( 5 || !0)<< endl; getch(); return 0; } // main

Output:

  5 && - 3 is: 1
  5 &&   0 is: 0
  0 &&   5 is: 0
  5 ||   0 is: 1
  0 ||   5 is: 1
  0 ||   0 is: 0
 !5 &&  !0 is: 0
 !5 ||  !0 is: 0
 !5 ||   0 is: 0

  5 ||  !0 is: 1