am i doing this right?

[iky]

im not sure if im calling the bool function correctly or if something is messed up in the function itself or the main function.
this is the bool function:

bool aretheyvalid (int x, int y, int z) {
    int invalid=0, valid=0;
    bool ans;
    
    if (x && y  && z >= 0 && x && y && z <= 100) {
        valid++;
        ans=true;
    }
    else {
        if (x < 0)
            cout<< x << " is too small" << endl;
        if (y < 0)
            cout<< y << " is too small" << endl;
        if (z < 0)
            cout<< z << " is to small" << endl;
        if (x >100)
            cout<< x << " is too big" << endl;
        if (y > 100)
            cout<< y << " is too big" << endl;
        if (z > 100)
            cout<< z << " is too big" << endl;
        ans=false;
    }
        
    invalid++; 
    return ans;
    return valid;
    return invalid;
}

this is the part of the main function with bool;

bool ans;
        ans= aretheyvalid(test1, test2, test3);
        if (ans) {
            cout<< "this group is valid" << endl;
        }
        else {
            cout<< "this group is invalid" << endl;
        }

the too small and too big part work fine in the bool function. the main function doesnt seem to be working right. i need it to say invalid when x, y, or z are above 100 or below 0. thank you

[Moschops]

 
 invalid++; 
 return ans;
 return valid;
 return invalid;

So, your flow of execution reaches invalid++; , and does that (i.e. increments the value of invalid) and then reaches return ans;, so the fnuction ends, and returns the value ans to the calling function.

  return valid;
 return invalid;

These will never ever be executed, because the function has already ended. What are you trying to do here?



if (x && y && z >= 0....
This is just wrong. You've clearly said to yourself something like:
"if x and y and z are greater than zero"
and tried to convert English into C++. That won't work. You can't translate English into C++.
I expect you meant this:

if (x >=0 &&    // if x is bigger than or equal to zero AND
   y > = 0 &&  // if y is bigger than or equal to zero AND
   z >= 0  &&  // if z is bigger than or equal to zero AND
   x  <= 100 &&  // if x is smaller than or equal to one hundred AND
   y <= 100 &&  // if x is smaller than or equal to one hundred  AND
   z <= 100) // if x is smaller than or equal to one hundred  

[iky]

thanks a lot.