Please why is this code giving me 'adult' as an answer?

Question

https://code.sololearn.com/coTmjhtC91NZ/?ref=app

Answer 1

c++ is not initializing its variables with default value, so after age is created it contains a random number (some say it is the value which was left on that memory position)

try add
cout << age;
to your code and see what is the real value of age

It is a good habbit to initialize all variables with default values.
please add c++ in the tags of your question

Answer 2

thanks Saga, nice explanation

Answer 3

wow thanks. I found out the default value is higher than 18

Answer 4

please what do you mean by initializing variables with default values

Answer 5

default value of auto data member is garbaze blue and it may any value.
so your result is undefined here.

Answer 6

Sir Saga, I don't get... please what is garbaze blue. I just google it and didn't find any Informatics

Answer 7

it means randomly any value(unpridictible value)..

Answer 8

hey you can confirm that ramdom value by cout age variable ...like below#include <iostream>
using namespace std;

int main()
{
int age;
cout << age <<endl;

if (age > 14) {
if(age >= 18) {
cout << "Adult";

}
else {
cout << "Teenager";
}
}
else {
if (age > 0) {
cout << "Child";
}
else {
cout << "Something's wrong";
}
}

return 0;
}

Answer 9

int age =4;

use this code to initialize the variable.
0 is a better that undefined.

Answer 10

@Sammy wel come