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Beginners - May 2011 (Page 38)

hi, I am trying to install QuantLib under cygwin. I followed the following instructions after downloading QuantLib-1.0.1.tar.gz 1. saved the .tar.gz...

[8 replies] Last: I cd'd into the QuantLib-1.0.1 directory and ran the gcc command but i... (by bacpp)

by Thuraya

2D array doubt !!

Hi, This code should check each column and each row in a 2D array, but it doesn't work it gives random numbers after the array and then the program stop work...

[2 replies] Last: sorry, each column and row should not contain more than one digit fr... (by Thuraya)

by bbcc

references as inputs to a function

Hello every body, Could any one help me in understanding the meaning of giving the references as the input of a function. The example is: int boost_z (const...

[3 replies] Last: unfortunately, the amperstand is overloaded in C++ 1. sometimes, it i... (by kfmfe04)

by adrian89

Write a bit in a byte/char

Could anyone help me understand how to insert or write a bit in a byte? I have a homework where I have to implement Huffman algorithm. I found out the code f...

[3 replies] Last: So, if I understand, you want to output the variables in base 2 and no... (by LB)

by SILENT SUFFERER

best c++ compiler

where can i find the best c++ compiler that is easy to use and works well. I also want know where i can learn how to program

[2 replies] Last: c++ compiler that is easy to use They all work more or less the sam... (by Moschops)

by CsqHossein

conver char array to int number

hi i have an array like this : char x ={'1','2','3}; i want convert the array to int number like this: 123(the type of it , is int) can you help me? What a wa...

[3 replies] Last: just make sure your last char is null like this, if you plan to use at... (by kfmfe04)

by LegendXeon

Question regarding the storage of library functions

Hi there, I am aware of the fact that the function prototype declarations of standard c/c++ library functions are stored in Header files like stdio.h, conio....

[5 replies] Last: Thanks guys. I appreciate the help :) (by LegendXeon)

by Sparkle24

Guys help me to learn C++

I just learning c++ about 3 days but overall i'm working in cmd app. How can I work with gui mode? Is it necessary to learn cmd mode for gui mode?

[5 replies] Last: Same thinking here. I have a book named"C++ gui programming with Qt" ... (by Sparkle24)

by vbaswant

Convert string to int

Hello everyone Could anyone please tell why does the following code not convert the string into int? When I pass a hard coded string e-g "123456" then the code...

[6 replies] Last: Thank you (:-) (by vbaswant)

by ammama

pointers

can anyone make me understand this line please?? its something relating to pointers. \\*.*"

[6 replies] Last: The reference to a riot should point the thread in a whole new ... (by ultifinitus)

by tonnot

How to use << operator in 'continuous' mode and to determine the 'end' of sentence

I have the next class where I have defined << operator in order to debug my program. This class emit the results to a file, to a listbox, etc. I have : W_de...

[2 replies] Last: Solved. I have to use the destructor .... (by tonnot)

by clomer

gradient function

Hello, Im trying to do some very basic algebra in c++, im not using any maths libraries. I have my midpoint calculator working ok but when trying to calculate t...

[3 replies] Last: go back to the mathematical definitions: given p1 = (x1,y1), p2 = (x2... (by kfmfe04)

by kyleC

Deleting duplicates from an array

Im pretty much new to C++ and trying to write a program for class that asks a user input for an array, ends with a sentinel, and deletes duplicate integers, i c...

[2 replies] Last: and deletes duplicate integers The amount of elements in standard ar... (by closed account zb0S216C)

by splash

double log(double)’ cannot appear in a constant-expression

Hi, i try to write the following c++ program: .... static const int row=(dynamic_cast<int>(log(BHR_LEN*G_PHT_COUNT)/log(2))); static const int pht_bits=((3...

[2 replies] Last: You cannot use 'dynamic_cast<>()' in this context. See http://en.wikip... (by coder777)

by Eman

SOME TIPS/HELP please

hello, I have to implement this function: void addTerm(double coeff, unsigned exponent); and it has to: // add term (coeff^exponent) to the polyn...

[4 replies] Last: you should use code-tags to make it easier to read ok - I see you hav... (by kfmfe04)

by waqqassheikh

Why do I get a segmentation fault while trying to find the median of a Circular Queue?

The code is below. I get a segmentation fault in the "findMedian()" function. The logic behind the function is that the singleStepIterator goes to the next elem...

[14 replies] Last: np - glad you learned something :) no worries - I have difficulties "... (by kfmfe04)

by romer123dd

PLEASE HELP ME :D

how will I do this one? Problem statement: The gravitational attractive force between two bodies of mass m1, and m2 seperated by a distance d is given by F=G*m...

[4 replies] Last: My comment: The datatype of m1, m2, d, F should be "double" as well. (by chucthanh)

by romer123dd

is this correct?

#include <iostream> #include <cmath> using namespace std; int main () { float x, xRad, answer; cout<<"Enter the value of x in degrees:"; cin>>x; c...

[1 reply] : You can check it by comparing the values given by the program to those... (by closed account D80DSL3A)

by cwj7897

Question about static members

Hi everyone! I'm currently trying to learn C++. I wrote a small program to get a little practice and now I have a question about static data members. Here is my...

[4 replies] Last: Thanks for the insight guestgulkan. I honestly didn't even think of th... (by cwj7897)

by Thuraya

checking rows & columns in 2D array!

How to check each row, each column, and each of the nine 3*3 blocks that they contain one of the digits from 1 to 9 like the following board?? it will no...

[10 replies] Last: here is the code to check rows and columns , but It doesn't work it g... (by Thuraya)

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