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This is a small tutorial/clarification on C++ logical operators & , | , && and ||.
Consider this C++ source file:
#include <iostream> using namespace std; int main(int argc, const char* argv[]) { //Proving conclusion: cout<<"Proving conclusion:\n"; cout<< (0x7 & 0x2)<<endl; cout<< (0x6 | 0x1)<<endl; cout<< (0x7 && 0x0)<<endl; cout<< (0x7 || 0x0)<<endl; cout<< (0x2 && 0x1)<<endl; cout<< (0x2 || 0x1)<<endl; }
| and &: Are bitwise operators.
Operate on all the bits and return the comparison.
ex:
111 & 010 = 010
110 | 001 = 111
|| and &&: Are boolean logical operators.
Will evaluate if each value is true or false, then return the boolean operation's result.
ex:
111 && 000 = (1 AND 0) = 0
111 || 000 = (1 OR 0) = 1
beware:
10 && 01 = (1 AND 1) = 1
10 || 01 = (1 OR 1) = 1
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