im getting 32767 in my output c++ program - c++

Question

This code simply takes a number, adds this to another number and then prints the result out. It also says whether the number is high or low. This is all done in a bool function:
#include <iostream>
using namespace std;
bool addition(int num, int num2, int total);
int main()
{
int num, num2,total;
cout << "enter a number"<< endl;
cin >> num;
cout<< "enter another number" << endl;
cin >> num2;
addition(num, num2, total);
{
cout <<"the first number is:" << num<< " the second number is: "<< num2 << endl;
cout << "the total is: " << total << endl;
if (1) {
cout << "its low" ;
} else {
cout << "its high";
}
cout << endl;
}
}
bool addition (int num, int num2, int total) {
//total = 0;
total = num + num2;
if (total >= 10){
return 1;
} else {
return -1;
}
}
The problem is this program is ALWAYS saying the number is low and the total is ALWAYS 32767. I don't know why.

Answer 1

You're passing total by value, which means addition() can't modify main's total variable. Pass by reference instead:
bool addition (int num, int num2, int &total)
The reason you always get "its low" is because if (1) is always true. Probably you want something like:
bool result = addition(num, num2, total);
Followed later by:
if (result)

Answer 2

You are passing total by its value. Use pointer or reference instead to modify its value inside the addition function.
Besides, returning 1 or -1 from a function with a boolean return type has same effect, as in C++ any nonzero value evaluates to true. Return either true or false (or either some nonzero value or 0).

Answer 3

Try passing total by reference instead of value like this:
bool addition (int num, int num2, int &total)
instead of
bool addition(int num, int num2, int total);
Also your condition if (1) is always true. So you will always get low

Answer 4

#include <iostream>
using namespace std;
bool addition (int num, int num2, int &total) {
total = num + num2;
return total >= 10;
}
int main()
{
int num, num2,total;
cout << "enter a number"<< endl;
cin >> num;
cout<< "enter another number" << endl;
cin >> num2;
bool additionResult = addition(num, num2, total);
{
cout <<"the first number is:" << num<< " the second number is: "<< num2 << endl;
cout << "the total is: " << total << endl;
if (!additionResult){
cout << "its low" ;
}
else{
cout << "its high";
}
cout << endl;
}
}