General C++ Programming - C++ Forum - September 2012 (Page 22)

by jsrevathy

scope

When can you have method in private part and data in public part of a class?

[10 replies] Last: > When can you data in public part of a class? a. When the data is im... (by JLBorges)

by gary gee

PLEASAE HELP

Project 1 The Amusement Park Problem – ...

[6 replies] Last: No, you need to learn how to code ASAP. These boards aren't somewhere... (by MrHutch)

by Tarun Batra

Extern variable problem

i have the following code THIS IS A.cpp int a=5; int inc(); int main() { printf("value of a is %d\n",a); a++; inc(); } i have another file which ...

[2 replies] Last: The problem is that inside the first module named A.cpp name a has... (by vlad from moscow)

by Tarun Batra

What should i do to remove the error '++' needs l-value

I have the following code its an a.cpp file when i compile this code in visaul studio i am getting an error :- error C2105: '++' needs l-value at the line...

[3 replies] Last: word16 checksum(char *addr, word32 count) *((word16 *) addr)++ O... (by TheIdeasMan)

by majo

please help with C++ program

Please help I want to write three float function one for getSales to ask the user for a sales figure and return the sale figure, another one for findHighest tha...

[1 reply] : <sigh> http://www.cplusplus.com/forum/beginner/79002/ (by MrHutch)

by ayanda83

WHAT IS THE BEST INSTALLER FOR Qt FRAME WORK?

I need to know what installer I can use for my Qt4 apps. Ofcourse the question is for those who are using C++ with the Qt4 framework.

[no replies]

by TheDestroyer

stringstream acts crazy at double to string!

Hello guys, I wrote a function that converts any variable to a string using stringstream, the function is the following: template <typename T> std::stri...

[2 replies] Last: Oh, that simple! Thanks man. :) (by TheDestroyer)

by ahmedlab7

Compute prime relation

I need a program that find a relation between two numbers entered by a user, and if the numbers share a common factor they will be a not relatively prime , othe...

[2 replies] Last: Just Code it... (by upX86)

by leonelui

Compile Problems

#include <iostream> #include <stdlib.h> using namespace std; int main() { double density, viscosity, diameter, speed ; do{ cout << "Enter Flu...

[3 replies] Last: You're asking the program to increment a variable named counter. Howe... (by MrHutch)

by Ilithiya

Trying to read words from a file into an array but still getting compiling errors.

I am still getting compiling errors. What I am trying to do is take a word 1 by 1 & put them into an array which in this case is labeled as "words". I contact...

[1 reply] : You want to change inFile >> words ; to inFile >> words ; . Simple ... (by monad)

by Ilithiya

How do I fix this compiling error (probably dealing with an array).

Here is my code: #include<iostream> #include<fstream> using namespace std; // Function Prototypes void readFilename(ifstream&, string&); void countNu...

[1 reply] : getline accepts only 1 element (ie: 1 string) line 81 is passing the w... (by soranz)

by Ilithiya

How do I read the number of characters and lines in a file properly?

First of all, I MUST pass by reference. My instructor said that the line counting & character counting SHOULD be done in the same function (but if I'm desperat...

[1 reply] : You are closing your inFile in the while loop. That's a problem! Sec... (by Stewbond)

by Ilithiya

What am I doing wrong with my arrays?

#include<iostream> #include<fstream> using namespace std; // Function Prototypes void readFilename(ifstream&, string&); void countNumberLines(ifstream...

[2 replies] Last: Yes, thank you. You definitely helped clear things up a bit but I am ... (by Ilithiya)

by Longazan

Concatenate an Array Into Another Array

Hi, I'm not sure if anyone had ask this question before, but I can't find an answer to this question on Google. So I have an array and I want to concatenate it...

[4 replies] Last: Thank you kbw, I will keep that in mind when declaring the size of the... (by Longazan)

by Ilithiya

How do I properly read in words from a file into an array?

Please help me. I don't know what to do. I messed up my code but I know it's only in "Function: populateArray". What I need to do is I need to pass in 2 refe...

[4 replies] Last: Thank you (by Ilithiya)

by rollie

Appending an integer to a string

I feel I am forgetting something basic - given: void log(const string & _str){...} what is an elegant way to write: int n = geterr(); log("Error code i...

[2 replies] Last: Use a function to log: template < typename T > std::ostream& do_log(... (by JLBorges)

by strongdrink

Calling derived class method from a pointer to its base class

Hello again. I was wondering if there is a way to call a derived class method from a pointer to its base class. Example: class Class1 { }; class Class2 : ...

[4 replies] Last: Mh... I thought about other ways I could do what I need to do, and mak... (by strongdrink)

by vw4x4

why does this happen?

char ch; int ii; ch=200; int=ch; cout<<"ii ="<<ch; the result is ii=-56 and not 200 why?is this because of the range of signed char?

[1 reply] : is this because of the range of signed char? Yes. Assuming 2's co... (by Disch)

by Ilithiya

How do I write this code that reads & counts the number of lines & characters in a file?

Here is my function code, but apparently I screwed up big time, what the heck do I type? I am desperate. My friend told me there is a way to use a while loop ...

[2 replies] Last: Oh nevermind LoL I found an easier method. Thanks anyway. (by Ilithiya)

by sbgreen6592

Expected primary expressions

I am trying to write a program that computes taxes. I keep receiving error mesages saying that there are expected primary expressions before certain things in ...

[4 replies] Last: If you indent the code properly these kind of errors is easy to spot. (by Peter87)

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General C++ Programming - September 2012 (Page 22)