Can anyone explain, why this code output is: 1 1

Question

//cpp code

#include<iostream.h>
using namespace std;

int main() {

int a=7, b=1;
if(a=8||b==7)
cout<<a*b;
cout<<" "<<a;
return 0;
}

Output: 1 1

Answer 1

You are using assignment operator inside that if comparison expression.

Everything to the right of the asignment operator is evaluated and then assigned to variable a.
In this case (8 || b==7) yields true, true is like the integer 1. that One is now the value of a.

a times b is 1*1 =1
after that you print again a space followed by the value of a which was modified to be one. thats why it prints two ones

Answer 2

The output of the code is "1 1" because of a mistake in the conditional statement within the if statement.

In the line `if(a=8||b==7)`, the issue is with the assignment operator (`=`) being used instead of the equality operator (`==`) in the expression `a=8`. The single equal sign assigns the value 8 to the variable `a` instead of comparing it. Since the value of `a` is now 8, the condition `a=8` evaluates to true.

Additionally, the header `<iostream.h>` is outdated. In C++, the correct header to include is `<iostream>`.

Answer 3

Thanks!! for the explanation

Answer 4

Let's break down the code execution step by step:

int a=7, b=1; - Two integer variables a and b are declared and initialized with the values 7 and 1, respectively.

if(a=8||b==7) - The value 8 is assigned to a due to the assignment operator =. As a result, the condition a=8 is true. The || operator (logical OR) short-circuits and does not evaluate the second condition b==7.

cout<<a*b; - Since the condition in the if statement is true, the code enters the if block and the product ofa and b (which is 8 * 1) is printed, resulting in the output 8.

cout<<" "<<a; - After the if block, this statement is executed unconditionally and prints a space followed by the value of a, which is still 8. So, the output becomes 1 1.

It's important to use the equality operator (==) for comparisons, and be careful with the assignment operator (=) to avoid unintended side effects.

Answer 5

Arturop Why using "yield" but not "return"? Is it a generator?