I don't know why the variable take the number 16, I want to know why

Question

I have this code in C ++ and forget put variable to the number then when I run the code don't have problem but the output is 95 and can get the reason is the variable number take 16.

I want to know what happanned

#include <iostream>
using namespace std;

int main()
{
int num = 1; //Esto es un contador
int number; //Esto es un variable de entrada
int total = 0; //Esto es un acumuludor

while (num<= 5) { //Esto es un ciclo
number++;
total += number; // Esto es igual a total= total + number
num ++;
}
cout << total << endl;
return 0;

}

Answer 1

See how loop working do dry run how values are changing . You can understood easily i u will calculate itself.

Answer 2

It is 15 not 16 you added 1+2+3+4+5 try to use cout inside the loop to print number for each ciclo as i do here https://code.sololearn.com/cjdpInJCZ6jX/?ref=app

Answer 3

It's a very bad thing to use the variable "number" without initializing a value to it (because it is a local variable, not global, global variables will be defaulted to 0).