Beginners - C++ Forum - May 2012 (Page 45)

by timcph2008

How to limit the input values must be integer?

Hello, I have a question about how to limit the input to the following program must be integer. here is the program, what should I add into it?? thank you! ...

[6 replies] Last: #include <limits> #include <cmath> #include <cctype> using namespace ... (by cire)

by Gregor Pavlic

Union

All the addresses of the union variables should be the same: int main() { union x { int s; double f; char t; long r; ...

[2 replies] Last: It has the same address, but &char will result in cout using the << ... (by ModShop)

by MJP4110

Linker error with constructor

I imagine the solution to this question is really easy but for some reason I can not figure it out. I keep getting a linker error and I know it has to be the c...

[3 replies] Last: If you get an unresolved external, it usually means that you declared ... (by BlackSheep)

by strupan

Rounding numbers

I am currently using this method. #include <iostream> #include <iomanip> using namespace std; int main(){ double num = 12.456789; cout << num << '\n'; /...

[4 replies] Last: You would have to check specifically for negative numbers, if a number... (by ModShop)

by Need4Sleep

Issues with placing a namespace in a seperate file

Im trying to organize some of my functions for a program that has become quite large. I want to use another file that holds a namespace 'Message' which wraps ar...

[5 replies] Last: Thank you so much! it makes a LOT more sense now. (by Need4Sleep)

by jasonp1978

Quick Question.. Passing one value from main & returning two values

I am trying to call a function from main(), passing one value to it and return TWO values, both the square of the number and the number to the power of three. ...

[2 replies] Last: Thank you very much for the help. I can't believe I missed that.. (by jasonp1978)

by Whovian

Why declare an overloaded operator in a class?

I tried the code #include <iostream> using namespace std; class Greeter { private: string name; public: Greeter(string name2) { name = na...

[8 replies] Last: I don't think that would work viliml. You would get an error that th... (by Stewbond)

by nerdycameron

Coding a Scientific calculator (Console based)

Hello As part of a personal project, I need to make a console based Scientific calculator. It needs to be able to add, subtract, multiply and divide a large a...

[8 replies] Last: Bump (by nerdycameron)

by rozick1

Cannot remove spaces from std string

Posted this in the wrong subforum, sorry. I need to remove commas and spaces from string but following is only removing commas: string b = "1, 2, 3,...

[2 replies] Last: Ah I feel very stupid now. Thanks! (by rozick1)

by stoffe1100

this pointer question!

Hello! I have googled alot and i find absolutely nothing on this subject. if i call a function this inside a class with the this pointer does it return from t...

[7 replies] Last: Sometimes, though, it's required. For instance: struct Base { B... (by closed account zb0S216C)

by DummyVar

c++ vector question.

Two questions: 1. Does .clear() member function in a vector free() memory called by new? I wrote some code to check it out. I think the answer is no, bec...

[2 replies] Last: 1. Does .clear() member function in a vector free() memory called by ... (by guestgulkan)

by rozick1

string::copy help

Does string::copy allow me to copy a substring to another string?

[1 reply] : No, substr does. (by Athar)

by cshu

need help

Im making an array program but i keep getting these errors here is my program: //Hw9ShumateCedric My first array #include<iostream> #include<iomanip> #inc...

[3 replies] Last: how would i declare loadArray int loadArray(double* resist); ... (by Moschops)

by lightknight61

Reading a character array from command line input file

Ok, so I've checked several forums here for help but to no avail. What I want to do is to read in a file name from the command line and then read from the fil...

[6 replies] Last: ROFL you actually emailed the professor... bwaaahahahahahahaha (by TACC)

by closed account zb0S216C

What's The Difference Between malloc() & new?

Consider these two memory allocation requests: #include <new> #include <cstdlib> int *Memory(static_cast<int*>(std::malloc(sizeof(int)))); int *Memor...

[4 replies] Last: Thanks again, Cubbi, for your assistance :) You have my gratitude. ... (by closed account zb0S216C)

by Gregory Sakas

Help picking out decimals from whole numbers?

In C++, is there anyway to see if a number divided by another is a whole number or not, and have that number disregarded if it a decimal. For example, if I have...

[7 replies] Last: @andywestken using directive within function scope, so only the relev... (by Danishx83)

by donfrema

Need help with little things...

So I have gotten the basis of this down... I just need to add a few more things but I am unsure about how to do this. I don't know how I would go about deleting...

[4 replies] Last: I think JLBorges has pointed a good option because if at any time yo... (by Danishx83)

by rayne

Sequential Axcess File Help!!!

I have written code that accepts input from the user to axcess a SAF and display the information that is related to the input. It is numeric and it is not displ...

[6 replies] Last: Well, the obvious thing you're missing is a loop. It's not possible t... (by cire)

by arooj

Triangle Perimeter/Area Calculator Problem

I have a messed up perimeter value when I try to compute the perimeter, can someone point out to me what I'm doing wrong? //Ch14Lab3.cpp-calculates and disp...

[no replies]

by Neema

Top-down design to display tile pattern

I'm confused about how to fix my parameter declaration errors. I think I have a misunderstanding of what the "for" parameters are stating in void MakePattern(in...

[8 replies] Last: /* function definition */ void MakeLayer (int layer, int a_width) { ... (by cire)

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Beginners - May 2012 (Page 45)