//Overrides the + opperator
cs304_statistician::statistician cs304_statistician::operator +(const statistician& s1, const statistician& s2){
//Creates a new statistician object to save values to and return
statistician statistician_return;
//Adds the length of the two statistician
statistician_return.save_length = s1.length() +s2.length();
//Adds the sum of the statistician
statistician_return.save_sum = s1.sum() +s2.sum();
//Selects which max to take
if(s1.maximum() > s2.maximum() ){
statistician_return.save_max = s1.maximum();
}
else{
statistician_return.save_max = s2.maximum();
}
//Selects which min to take
if(s1.minimum() < s2.minimum() ){
statistician_return.save_min = s1.minimum();
}
else{
statistician_return.save_min = s2.minimum();
}
//Recalculates the mean
statistician_return.save_mean = (((s1.mean()*s1.length()) +(s2.mean()*s2.length()))/statistician_return.save_length);
return statistician_return;
}
bool operator == (const statistician& s1, const statistician& s2){
// If they's both empty, just ship them out like that
if( ( s1.length() == 0) && (s2.length() == 0) ) return true;
// Go through anything that could be different. If they are, it's all false!
if( !(s1.length() == s2.length() ) ) return false;
else if( !(s1.sum() == s2.sum() ) ) return false;
else if( !(s1.minimum() == s2.minimum() ) ) return false;
else if( !(s1.maximum() == s2.maximum() ) ) return false;
else if( !(s1.mean() == s2.mean() ) ) return false;
return true;
}
//Overrides the * operator
cs304_statistician::statistician cs304_statistician::operator *(double scale, const statistician& s){
//Creates new statistician object to be returned
statistician statistician_return;
//Scales all the values of the statistician
statistician_return.save_max = s.maximum() * scale;
statistician_return.save_mean = s.mean() * scale;
statistician_return.save_min = s.minimum() * scale;
statistician_return.save_sum = s.sum() * scale;
//Retains the origin length
statistician_return.save_length = s.length();
return statistician_return;
}
void print_values(const statistician& s)
// Library facilties used: iostream.h
{
cout << setw(10) << s.length( );
cout << setw(10) << s.sum( );
if (s.length( ) != 0)
{
cout << setw(10) << s.minimum( );
cout << setw(10) << s.mean( );
cout << setw(10) << s.maximum( );
}
else
cout << " none none none";
cout << endl;
}
//Checks to see if two statisticians lengths are equal
bool cs304_statistician::operator ==(const statistician& s1, const statistician& s2){
//If they are equal lengths return true
if(s1.length() == s2.length() && s1.minimum() == s2.minimum() && s1.mean() == s2.mean() && s1.sum() == s2.sum() && s1.maximum() == s2.maximum())
return true;
//If they are not equal lengths return false
else
return false;
}