I toasted this a while ago, but it has since disappeared, and I believe it's worth toasting again.

http://www.51cnnet.com/directory

If you would like to learn a programming language, or several, or any number of computer-related subjects, go to that site and find an e-book you like. There are several thousand to choose from.

Rules of /pr/
1. This is not /prog/
2. Do not be a faggot

Just a real quick, but stupid question, /pr/...

How come when using the POW function from cmath.h, you have to use doubles to use the function?

For example:

#include <iostream>
#include <cstdlib>
#include <cmath>
using namespace std;

int main() {
double x = 5, y = 3;
double z = pow(x,y);
cout << x << " ^ " << y << " = " << z << "";

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Hello /pr/. I'm working on a program that will convert between Celsius and Fahrenheit, and I'm having some trouble. The goal of the assignment is to learn how to write functions outside of int main() and call them within int main(). My problem is that the variable that I use for storing the starting temp doesn't seem to want to carry over to the functions (I get errors about it being undefined or no value set).

Here's the code. The offending variable is temp. Pic related - it's my reaction to this.


#include <iostream>
using namespace std;

double to_fahrenheit(){
double convertedTemp, temp;
convertedTemp = 9.0/5.0 * temp + 32;
return convertedTemp;
}

double to_celsius(){

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>>

Anonymous 09/11/10(Tue)15:36 No. 2139 >double convertedTemp, temp; >convertedTemp = 9.0/5.0 * temp + 32; means convertedTemp = 9.0/5.0 * TRASH + 32; temp there is local to the function, it is NOT the same as main's temp. you can either pass temp to the function (the right way), or use a global (don't do this). to pass an argument: type0 function(type1 arg){...} - function that receives an type1 and returns type0. Also read a book.

>>	Anonymous 09/11/16(Mon)05:29 No. 2156 >>Also read a book. Helpful :P OP, look into parameters. You can use them to "pass" variables from your main method to your methods. They're brilliant :D

>>	Anonymous 09/11/16(Mon)13:28 No. 2157 File: 125840689020.jpg-(20.48KB, 408x304, me.jpg) Precision with Doubles? Use BigDecimal, mate.

How do I even start this assignment? I don't get what I have to do. Please help.

Assignment:

Create XML for basic data about people. You must have at least 3 people and no more than 6 are allowed. Each person has an identification number, a name, an address, and anywhere from 0 to an unlimited number of occupations. The ID number is one field, the name is made up of a first name, a last name, and a middle initial which may or may not exist; the address is made up of street address, city, state, and zip code; and the occupations if they exist contain a job title, a salary and company. The fields identification number, first name, last name, street address, city, state and zip code must occur exactly once for each person.

/pr/, I'm trying to write a program to convert Binary to Decimal... I only have two errors, but it's both about the same line and the same error, so I guess that's not bad for a first compile. I can't for the life of me figure out what's wrong... here's the code for the program...

// Binary to Decimal Converter. Programmed by Anonymous.
#include <iostream> // Include input/output stream header.
#include <cstdlib> // Include the C standard library header.
using namespace std; // Use the standard namespace.

char chUserInput[8];
int decValue = 0;
int count;

void checkValue() {
if(chUserInput[1] == 1) {
decValue = decValue+128;
}

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I dont know how to do this assignment. Please tell me what they are asking. Thank you.

assignment:

Create XML for basic data about people. You must have at least 3 people and no more than 6 are allowed. Each person has an identification number, a name, an address, and anywhere from 0 to an unlimited number of occupations. The ID number is one field, the name is made up of a first name, a last name, and a middle initial which may or may not exist; the address is made up of street address, city, state, and zip code; and the occupations if they exist contain a job title, a salary and company. The fields identification number, first name, last name, street address, city, state and zip code must occur exactly once for each person.

Hi /pr/

I'm not really into programing and all, but I was just curious about the way of key-generator works. How can random number be validate by a program ? this is a bit unlogical I guess...

Can someone explains to me how this is working
? thx

pic unrelated

Did /pr/ learn more from a teacher or a textbook

/pr/... programming newfag here. Actually been doing C++ for a while, but never moved past the basics... I designed a form in Visual Studio 2008... how do I assign integers to the text typed in a text box and do something when the button I put in there is clicked?