+ 1

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

//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

26th Jun 2023, 5:52 PM
Mac Arcade
Mac Arcade - avatar
5 odpowiedzi
+ 8
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
26th Jun 2023, 6:02 PM
arturop200
arturop200 - avatar
+ 3
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` is outdated.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>`.
26th Jun 2023, 11:03 PM
Dian Lerry Gabatin Lizardo (Dian)
Dian Lerry Gabatin Lizardo (Dian) - avatar
+ 2
Thanks!! for the explanation
26th Jun 2023, 6:11 PM
Mac Arcade
Mac Arcade - avatar
+ 2
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.
26th Jun 2023, 11:05 PM
Dian Lerry Gabatin Lizardo (Dian)
Dian Lerry Gabatin Lizardo (Dian) - avatar
+ 1
Arturop Why using "yield" but not "return"? Is it a generator?
26th Jun 2023, 6:17 PM
Dragon RB
Dragon RB - avatar