//
// ------ scale mutator ---
//
void Temperature::Scale(scales inScale)
{
if (scale_ == inScale)
{
return;
}
else
switch (inScale)
{
case CELSIUS:
switch(scale_)
{
case FARRENHEIT:
temp_ = FtoC( temp_);
scale_ = CELSIUS;
break;
case KELVIN:
temp_ = KtoC( temp_);
scale_ = CELSIUS;
break;
}
break;
case FARRENHEIT:
switch(scale_)
{
case KELVIN:
temp_ = KtoC( temp_);
case CELSIUS:
temp_ = CtoF( temp_);
scale_ = FARRENHEIT;
break;
}
break;
case KELVIN:
switch(scale_)
{
case FARRENHEIT:
temp_ = FtoC( temp_);
case CELSIUS:
temp_ = CtoK( temp_);
scale_ = KELVIN;
break;
}
break;
default: std::cerr << "Invalid SCALE. SCALE must be C, F or K";
}
}
int main(){
// instructions
std::cout << "Enter a rounded temperature value followed by its type (103F, 2C, 453K)\n";
std::cout << "Exit code: e\n";
// variables
int length;
bool valid;
std::string temp;
std::string line;
// will loop until given exit code of e;
do{
std::cout << "> ";
// create separation stream
std::stringstream ss;
ss.clear();
// get input from user
getline(std::cin, line);
// calculate length
length = line.length();
// check input
if(length==1){
// if exit code given
if(!line.compare("e")){
break;
}
// display error and restart a loop
std::cout <<"Invalid Input\n";
continue;
}
// gather assumed value from input
for(int i = 0; i <=line.length()-2; i++){
ss << line[i];
}
// check if assumed input is valud
temp = ss.str();
if(!is_number(temp)){
std::cout << "Input not valid\n";
continue;
}
// convert string temp to an integer
int target = atoi(temp.c_str());
//switch for type and display conversions
char type = line[line.length()-1];
switch(type){
case 'f':
case 'F':
std::cout << "Fahrenheit: " << target << std::endl;
FtoC(target);
FtoK(target);
break;
case 'c':
case 'C':
std::cout << "Celsius: " << target << std::endl;
CtoF(target);
CtoK(target);
break;
case 'k':
case 'K':
std::cout << "Kelvin: " << target << std::endl;
KtoF(target);
KtoC(target);
break;
default:
std::cout << "Invalid type\n";
}
}while(1);
return 0;
}
