Thread: Hello and Help

Originally Posted by robatino

Code:

std::numeric_limits<std::streamsize>::max(here) is equal to the maximum value of a variable of type std::streamsize.

Originally Posted by Loctan

You can test it yourself by downloading Dev C++. you don't have to be in your lab.

Code:

transform(answer.begin(here), answer.end(here), answer.begin(here), ::tolower);

Converts the string from uppcase to lowercase. That way when you compare names JOHNSON=johnson = JoHnSoN. Otherwise they won't match.

Code:

std::cin.ignore(here);
std::cin.get(here)

When you run your programs some places make your window appear and then close right away (if you aren't in a DOS window or terminal). This will leave it open until you press enter.

Okay, I'll look into Dev C++...
Thanks for explaining... So i'm suppose to write the values here right? Or not?....

But, do I need them in my programming?... And do you think it will work?....


Okay, so here's another question in my assignment.

Write a programme that can read the type of fruits, quantity, unit price and the total price.
Here's my programme:
Either this...

Code:

#include <iostream>
#include <string>

main ()

{
	int quantity, total
	std::string s;
	std::cout << "Fruits available: Apple, Banana and Orange";
	std::cout << "Enter type of fruits: ";
	std::cin >> s;
	std::cout << "Enter quantity: ";
	std::cin >> quantity;

	if (s == "Apple")
	{
		std::cout << "Unit per price: $10";
		total = quantity * 10;
		std::cout << "Your total amount: $" << total;
	}

	if (s == "Banana")
	{
		std::cout << "Unit per price: $8";
		total = quantity * 8;
		std::cout << "Your total amount: $" << total;
	}

	if (s == "Orange")
	{
		std::cout << "Unit per price: $15";
		total = quantity * 15;
		std::cout << "Your total amount: $" << total;
	}

	else
	{
		std::cout << "Fruit entered not available";
	}

	return 0:
}

or this....

Code:

#include <iostream>
#include <string>

main ()

{
	int quantity, price, total
	std::string s;
	std::cout << "Fruits available: Apple, Banana and Orange";
	std::cout << "Enter type of fruits: ";
	std::cin >> s;
	std::cout << "Enter quantity: ";
	std::cin >> quantity;

	if (s == "Apple");
	{
		price = 10;
	}

	if (s == "Banana")
	{
		price = 8;
	}

	if (s == "Orange")
	{
		price = 15;
	}

	std::cout << "Unit per price: $" << price; 
	total = price * quantity;
	std::cout << "Your total amount: $" << total;

	else
	{
		std::cout << "Fruit entered not available";
	}

	return 0:
}

Would they work? I'm not so cerain about how I used the else on both programmes. And Im less confident for the second programme compared to the first. Again I haven't tested these because.... bla blab bla....
Which one is better?

Also, is it necessary to use endl;? When trying it, it work on <iostream.h> but not <iostream>. Did I get that right? And when do I know which one to use?...
EDIT: Ohhh. I just remembered that for <iostream> we use std::endl; instead of just endl;. So no need to answere that question. But I'm still unsure when it is appropriate to use it.

Regarding this

Code:

main ()

and

Code:

int main ()

What's the difference between them? Why is int sometimes used before main?

Lastly I'm I asking too many questions. Please tell me if I am. I don't want to be a nuisance to you guys.