Requesting help for programming/ CS majors?

[Superfreak04]

Re: Requesting help for programming/ CS majors?

In case you hadn't been able to translate rushy's code, here's what part one could look like:

#include <iostream>
using namespace std;

int main()
{
	char name[50];
	int count = 0;
	bool valid = true;
	char inputChar; 

	cout << "Enter a name one letter at a time and denote the end of the name with *: ";

	while(valid)
	{
		cin >> inputChar;
		if(inputChar != '*')
		{
			name[count] = inputChar;
			count++;
		}
		else
			valid = false;
	}

	system("pause");
	return 0;
}

Finding the size of a char array in C++ is sizeof(name).

Also, you might want to look into including the * as well for your later parts so you know to stop sorting there. Or make a new array using the count variable, but you'd have to make the new char array a pointer since you can't declare variable size char arrays unless you do.

Hmm, I used this code and what happens is that I can type and hit as many letters as I want. Then once I type in, then it will end. Makes sense, although I'm supposed to make it ask me to enter a character each time I want to enter a new one.

"Enter a name one letter at a time and denote the end of the name with *: E

"Enter a name one letter at a time and denote the end of the name with *: R

"Enter a name one letter at a time and denote the end of the name with *: I

"Enter a name one letter at a time and denote the end of the name with *: C

etc.

At least, that's how we've been taught. It's so that we can make sure it's working properly I guess.

[shenjoku]

Re: Requesting help for programming/ CS majors?

damn, C++ is so much nicer at handling IO than other languages I've programmed in..
Do you know if there's any way to restrict input to just one character, Kibblre?

You can. You call std::cin() with std::setw(), passing it the number of characters you're expecting like this:

#include <iomanip> // Need this for std::setw()

char c;
std::cin >> std::setw(1) >> c;

This will only read in the first character input by the user. This will not limit them on what they can input though.

[Kibblre]

Re: Requesting help for programming/ CS majors?

Hmm, I used this code and what happens is that I can type and hit as many letters as I want. Then once I type in, then it will end. Makes sense, although I'm supposed to make it ask me to enter a character each time I want to enter a new one.

"Enter a name one letter at a time and denote the end of the name with *: E

"Enter a name one letter at a time and denote the end of the name with *: R

"Enter a name one letter at a time and denote the end of the name with *: I

"Enter a name one letter at a time and denote the end of the name with *: C

etc.

At least, that's how we've been taught. It's so that we can make sure it's working properly I guess.

Then you'd just have to move the cout statement from where it is to directly above the cin statement. That way it'll print out every time the loop restarts. So the while loop would look like:

	while(valid)
	{
                cout << "Enter a name one letter at a time and denote the end of the name with *: ";
		cin.get(inputChar);
		if(inputChar != '*')
		{
			name[count] = inputChar;
			count++;
		}
		else
			valid = false;
           
                cout << endl; //put and end line here for better readability
	}

You can. You call std::cin() with std::setw(), passing it the number of characters you're expecting like this:

#include <iomanip> // Need this for std::setw()

char c;
std::cin >> std::setw(1) >> c;

This will only read in the first character input by the user. This will not limit them on what they can input though.

Yup, now I remember. I haven't used setw since last year and I totally forgot about it.

[dAnceguy117]

Re: Requesting help for programming/ CS majors?

here's a sketchy solution for step 3 using C-style everything (which seems to work? based on the sample code?) and keeping rushy's variable names.

no guarantees about just plugging this in, but you should be able to see what your objective is here.

char letter_a = 'a';
int value_a = (int)letter_a;

int distribution[26];

for (int i=0; i<26; i++)
{
	distribution[i] = 0;
}

for (int i=0; i<name.size(); i++)
{
	int value_myLetter = (int)name[i];
	int elemNumber = value_myLetter - value_a;
	
	distribution[elemNumber]++;
}

and then uhhh you're gonna want to print it.

[Kibblre]

Re: Requesting help for programming/ CS majors?

I have to use dummy's because the PC won't display anything without it.

Not sure if you caught this yet looking at my code, but that's what system("pause") will do for you.

Also, what level course is this? If this is an introductory course then he's making you do some tricky stuff for that level.

[Superfreak04]

Re: Requesting help for programming/ CS majors?

Not sure if you caught this yet looking at my code, but that's what system("pause") will do for you.

Also, what level course is this? If this is an introductory course then he's making you do some tricky stuff for that level.

Yeah I noticed that right away lol. And yes this is intro. ;_;

[Kibblre]

Re: Requesting help for programming/ CS majors?

Question about part 2: does he want capitals included too? It'll make it even harder if you have to sort lower case letters combined with capital letters instead of making them all lowercase. If you were to use standard sorting methods, the capitals would sort themselves to the beginning in order then the lower case letters would be in order, like ABCDabcd

[Superfreak04]

Re: Requesting help for programming/ CS majors?

I believe she wants us to include capitals. Even though it's up to the user whether or not you wanna type in a capital.

[Kibblre]

Re: Requesting help for programming/ CS majors?

I believe she wants us to include capitals. Even though it's up to the user whether or not you wanna type in a capital.

So then you'd want the output like I described? It'll be tough to make it aAbBcCdD

[Air En Trance]

Re: Requesting help for programming/ CS majors?

this assignment is a horrible way to learn arrays and input

[Kibblre]

Re: Requesting help for programming/ CS majors?

this assignment is a horrible way to learn arrays and input

Pretty much, yeah. Should've just stopped at the inputting the name part and then have them print it.

[Superfreak04]

Re: Requesting help for programming/ CS majors?

So then you'd want the output like I described? It'll be tough to make it aAbBcCdD

Yeah lets do that just for safety.

[Kibblre]

Re: Requesting help for programming/ CS majors?

Yeah lets do that just for safety.

Good. For the record, this is because of ASCII values. If you were to compare 'a' and 'b', you'd be comparing 97 and 98. Capital letters range from 65 to 90 while lowercase range from 97 to 122.

[Fission]

Re: Requesting help for programming/ CS majors?

i'm not sure why C idiom solutions are being suggested when the OP specifically mentioned C++. it's a terrible idea to mix and match them, don't do it.

[rushyrulz]

Re: Requesting help for programming/ CS majors?

If this is an introductory course then he's making you do some tricky stuff for that level.

I've had much harder assignments in introductory level classes. One of my projects was to code a sieve of eratosthenes from scratch.