Can somebody explain about && and || operator.??

Question

sometimes i get confused ..how it works properly && and || operator..

Answer 1

&& is Logial AND.

True only if all operands are true.

example - If c = 5 and d = 2 then, expression ((c == 5) && (d > 5))equals to 0. 👈 its false

|| Logical OR.

True only if either one operand is true.

example - If c = 5 and d = 2 then, expression ((c == 5) || (d > 5))equals to 1.👈its true.

Answer 2

&& means and. || means or. Just like in English. && checks if the expression on the left and right is true. || checks if either the expression on left or right is true.

4>0 && 4<5 will return true. 4>0 && 4<4 will return false. 50>5 || 9!=9 will return true. 50==5 || 0>1 will return false.

Answer 3

tq i got it

then how does this works..

int a=1;
int b =0;
cout<<(!(a||b)&&(!b);

what is the output of this and how.

Answer 4

Both are the Logical operator.
& logical AND (Both should be correct).
|| logical OR (If only one is correct then also it'll print True).

Think about this Example:

let Day, Night, Sun, Moon
//now map all the values eg.

Day && Sun == True //both comes together
Night && Moon == True //likewise

Day || Night == True //true coz either Day or Night
Sun || Moon == True //likewise

But Not these things'll happen concurrently eg.
the result will False.
Day && Moon
Night && Sun

Answer 5

no Sh5am
(1||0) becomes true and then
!(1||0) becomes false

Answer 6

now that you understand the difference between && and || you should know about & and | operators.

heres a code to understand the difference between && and &.

https://code.sololearn.com/cFMT3b4TWgCy/?ref=app

Answer 7

In C++, 0 means false and anything other than 0 means true.

!(a||b) or !(1||0) will be false.
!b or !0 is true.
false&&true will return false or 0.

Answer 8

еге

Answer 9

bro how does !(1||0) becomes false its true know..?

Answer 10

1||0 is true
! (1||0) is false

Answer 11

how its true vinu. can u explain it da

Answer 12

tqsm qwerty...

Answer 13

1||1=1
1||0=1
0||1=1
0||0=0

or operator performes addition operation da + so either is true it bcms true

Answer 14

vinu what will b the ouput according to u da?

Answer 15

Hi, this is my first answer and will be based of my basic understanding of this concept.

&& is a boolean operator, it executes code only when both conditions are met.

|| is a OR operator meaning it will execute the code if either one of the conditions are met.

———————
BASIC EXAMPLE:
#include <iostream>
using namespace std;

int main() {
int rank = 2;
int age = 16;
if (rank <= 10 || age >= 18 ){
cout << "You Qualify for the olympics" << endl;
}
return 0;
}

//OUTPUTS: You Qualify for the olympics

Answer 16

no shyam it becomes true

Answer 17

tq saransh kumar chauhan ..

Answer 18

&& defines and operator when all conditions are true...
|| defines or operator when one or two or more conditions satisfied

Answer 19

|| and &&

first || means OR condition any one of the condition is TRUE then its TRUE
this opertation has following possible
true || true= True
true || false= True
false || true= True
false || false= False

Second && means AND condition any one of the condition is FALSE then its FALSE, All the condition must be TRUE then TRUE
this opertation has following possible
true && true= True
true && false= False
false && true= False
false && false= False

Answer 20

In Java:
&& is called the And Operator
|| is called the Or Operator

The And Operator checks that both operands are true and then the condition is deemed true.
Whilst with the Or Operator, only 1 operand needs to be true, then the condition becomes true.

e.g. AND Operator

An applicant needs to be older than 18 AND have paid a minimum of $1000 deposit for the condition to be met and therefore the application being approved/deemed successful for the Applicants tertiary studies:

int age=22
int deposit=2200
if(age>18 && deposit>1000){
System.out.prinln("Approved");
}
//Output is Approved as both conditions are met

e.g. OR Operator

An applicant should be to be older than 18 OR they must have paid the minimum of $1000 deposit for the condition to be met and therefore the application being approved/deemed successful for the Applicants tertiary studies:

int age=17
int deposit=2200
if(age>18 || deposit>1000){
System.out.prinln("Approved");
}
//Output is Approved as the deposit condition is true