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General C++ Programming - March 2013 (Page 51)

Is the below code correct? Or does the allocated type mismatch with what an std::map will try to allocate? typedef std::allocator<std::pair<int, std::str...

[13 replies] Last: How do we know that Catfish's allocator is not a special case? We do... (by closed account zb0S216C)

by SergenatPeanuts

How to prompt user input only letters(a-z)?

So I'm making this small program just to practice stuff and I've stumbled upon this problem, how do I have the user enter only letters? while browsing in this ...

[3 replies] Last: same idea. Read the whole line in as a string and verify it is what y... (by Disch)

by Tom Yothers

Error Code Design

I have been over-thinking and going in circles for a design aspect of a system, so I figured some forum advice will get me back on track! I have many objects...

[4 replies] Last: I have, but an event system would also be monumental because I would n... (by Tom Yothers)

by kelvin516

cout total element in array

Hi, i a beginner in C++ programming. I having a problem to show the output of all the element i store at a array called total_price. the output become unreadabl...

[6 replies] Last: Thx for all the reply. I very appreciate this. (by kelvin516)

by ramsavi

problem in using gdb

while using gdb for a big code having various module i face a lot of problem . how to use it.

[7 replies] Last: On Linux you can use DDD (data display debugger), a frontend for gdb: ... (by closed account D4S8vCM9)

by Steve02

Parse long date/time to HH:MM

I'm trying to convert a date & time reply from a modem to HH:MM format. I need to set an Arduino for the correct time on startup. The modem returns: +CCLK: "12...

[1 reply] : You could use a regex expression to extract what you want from the ini... (by ajh32)

by dekeenfrance

How to boost up execution?

Hi, I wrote a program to run long simulations, in one cpu core computation. During the run, I checked the cpu occupation was always around 85%. Since my ...

[2 replies] Last: Well, that's really hard to say then without the code. The problem is ... (by KRAkatau)

by toomanystars

Issues with vector, inheritance, returning constructor

Hi guys, Have a rather convoluted problem and I am not sure how to get about it. First Off I have a "Magic class" with the following function. virtual Eff...

[4 replies] Last: Thanks for the help guys. In the end I just ended up using pointers wh... (by toomanystars)

by ramsavi

Help needed.

I have to replace a string of a file by first opening it . the code i used is In the file it is CONVERTED_REC_STATS = 7/or any number. i have to replace it wi...

[3 replies] Last: i have no any Idea because i need also.... (by Blanchejem)

by thethreat

Print the name of the student with the Highest GPA along with the GPA

Need help printing the name of a user created student with the user created GPA with the Highest GPA after his/her name. #include <iostream> #include <strin...

[no replies]

by littleninja36

Calculating the maximum and minimum time needed to run a program

In my Programming assignment, I have to use a program provided by my instructor of Fibonnaci numbers and alter it so that instead of showing the amount of time ...

[1 reply] : Suggest you place your code in b/n code tags to make it easier to read... (by buffbill)

by pwd

Obtaining a mean, while sentinel is 0

I'm writing a program where a user keeps entering numbers until "0" is entered. Once "0" is entered the loop ends and It displays the mean. Problem is it count...

[3 replies] Last: I think if you just make max and min = price above the loop it should ... (by buffbill)

by Skraiten

OpenGL 2.1

I am having trouble getting my spheres to rotate in place. It looks like a snowman. My Bottom sphere is rotating in place, but the middle and top one move a...

[no replies]

by crimsonzero2

runge-kutta with 2d kinematics

I got to make a runge-kutta program that can solve where an object is at an x position and a y position. Where dx/dt = vx, dy/dt = vy, dvx/dt = 0, and dvy/dt =...

[1 reply] : It was a simple radian-degree error. Here is the code: #include <i... (by crimsonzero2)

by camarowheels

Decode / Code a simple cipher

So I am trying to make a simple cipher but can't see a pattern between the letters. Convert: A B C D E F G H I J K L M N O P Q R S T U ...

[1 reply] : why is this in general c++ and not the lounge? also, a code doesn't ne... (by closed account Dy7SLyTq)

by incognitocpp

How do I print out a square of stars with different length and width given?

#include <iostream> using namespace std; int main() { int h,v,num; cout<<"Give a value for length "; cin>>v; cout<<"Give a value for width "; cin>>h; for...

[5 replies] Last: got it :D (by incognitocpp)

by njabbour

Does anyone know what I am doing wrong

A. Complete the Pointer Program (30 pts) Complete the following program: Include the comments below with your code and use the variable names provided. You...

[1 reply] : Well, you aren't doing anything that the comments say you should be do... (by firedraco)

by OregonState1979

Affine Encoding Problem

I have the encryption code working so I commented out the functions in main. I'm trying to do a decryption using a^-1(x-b) with the code you see but I get all A...

[4 replies] Last: I mis-understood the formula for decoding. So now it's fixed and I ass... (by OregonState1979)

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