Thread: Problem with If - Switches

This is a two part question;

I am attempting to write a code which will output a number in its txt form, for example if the input in 10 it outputs ten, if the input is 22 it outputs twenty-two.

Now, yesterday it appeared I had this project complete. I could execute the code and it behaved exactly like I wanted it to. However, since installing cygwin the code doesnt appear to be behaving in the same way. When i try to compile it now explains to me that i need a parenthesis after the else if statement containing a condition, and even once I Include this, else if (tens >=2), the program no longer outputs correctly for numbers above 19.

In conclusion, my questions are, Why is the compiler functioning so differently now, is this a good or a bad thing, and of course, i am curious as to what exactly is faulty about the code. Any hints or advice will be more than appreciated;

Code:

// Computer Science - Lab 2b
// Outputing Text Format of Numbers 10-99
// Adam Davis - 09/06/09

#include <iostream>

using namespace std;

int main() {

cout << "Enter a Number Between 10-99: ";
char tens, ones; 
cin >> tens >> ones;

if (tens = 1) {
switch (ones) {
    case '0' : cout << "Ten"; break;
    case '1' : cout << "Eleven"; break;
	case '2' : cout << "Twelve"; break;
	case '3' : cout << "Thirteen"; break;
	case '4' : cout << "Fourteen"; break;
	case '5' : cout << "Fifteen"; break;
	case '6' : cout << "Sixteen"; break;
	case '7' : cout << "Seventeen"; break;
	case '8' : cout << "Eighteen"; break;
	case '9' : cout << "Nineteen"; break;
}
}
else if  {
switch (tens) { 
	case '2' : cout << "Twenty"; break;
	case '3' : cout << "Thirty"; break;
	case '4' : cout << "Fourty"; break;
	case '5' : cout << "Fifty"; break;
	case '6' : cout << "Sixty"; break;
	case '7' : cout << "Seventy"; break;
	case '8' : cout << "Eighty"; break;
	case '9' : cout << "Nintey"; break;
	default: cout << "Number not within allowed range" << endl;
}
switch (ones) {
    case '0' : cout << " "; break;
    case '1' : cout << " one"; break;
    case '2' : cout << " two"; break;
	case '3' : cout << " three"; break;
	case '4' : cout << " four"; break;
	case '5' : cout << " five"; break;
	case '6' : cout << " six"; break;
	case '7' : cout << " seven"; break;
	case '8' : cout << " eight"; break;
	case '9' : cout << " nine"; break;
	default: cout << "Number not within allowed range" << endl;
}
}
}

if (tens = 1) isn't what you want.

Code:

else if {

is so amazingly illegal. else if what?? You need a condition to test with your if statement.

Originally Posted by Mario F.

This is not the proper syntax. Remove 'if'. You only include it when you want to add a condition to the else statement

....

Incidentally, what compiler are you using under cygwin? "else if {" should not compile. The syntax for any if statement is: if ( expression ) statement

It compiled pre-Cygwi and worked without error. Now that I have successfully installed and am using cygwin the errors in my previous code are being noticed.

I am not aware of any compiler that has ever allowed such a thing. Tell us what it is, so that we may burn it in effigy.

If you didn't have a compiler, then you got the message "unable to find compiler" (or something similar), and I doubt that you would have considered that a success. Dev-C++ does come with the gcc compiler, and I will bet you any amount of money you like that gcc would never successfully compile the code you posted. Whether you were just not noticing the error messages or what I don't know.

Originally Posted by tabstop

See, that's the thing -- I have the same exact conditions on my laptop -- Dev-C++ and the code you posted, and all you get is

Code:

error: expected `(' before '{' token

What you changed in the file I couldn't say.

Since you're not getting the same results I received then i believe it's fair to say that you don't have the same exact conditions that I had earlier. Again, I apologize if you're having a hard time believing this, perhaps it was just some freak thing, but if you'd like I'll just say that I must be developing daytime hallucinations. Either way, this whole digression is a bit of a derail, yes?

Originally Posted by adamdavis

Since you're not getting the same results I received then i believe it's fair to say that you don't have the same exact conditions that I had earlier. Again, I apologize if you're having a hard time believing this, perhaps it was just some freak thing, but if you'd like I'll just say that I must be developing daytime hallucinations. Either way, this whole digression is a bit of a derail, yes?

Until this same issue bites you again when you do lab 3, of course. But that's probably a whole week away, so we've got time.

the issue shouldn't bite me again as my compiler seems to be behaving correctly now though I'm sure I will run into future problems, as I am learning this language and don't possess savant like skills with it.

Right now I'm attempting to figure out why when i type in 19 as my input my debugger is telling me the values of tens = 27 and ones = ]. The joys of learning.

Again, sorry to blow your mind with my freak occurrence.