70 Discussion / Question Topics
Remove Filter  | Hello ladies and gents, Chapter 3 exercise 3-1: [quote]Suppose we wish to find the median of a collection of values. Assume that the we have read some values so far, and that we have no idea how many values remain to be read. Prove that we cannot afford to discard … |
| | Hello ladies and gents, Was wondering if any of you could help me out, how can I count the amount of numbers(digits) there are in one integer, for example: int integer = 123; integer has three digits. int secInteger = 10; secInteger has two digits. The reason for asking is, … |
| | Hello ladies and gents, Had to make the following exercise in Accelerated C++ Write a program to calculate the average of the numbers stored in a vector<double>. THis was my solution: [code] #include <iostream> #include <iomanip> #include <vector> using std::cin; using std::istream; using std::cout; using std::setprecision; using std::endl; using std::vector; …  |
| | Hi Danny, Was wondering when you scrolled down all the way to read the thread you're interested in, there's no way to either go to the top of the page or push a button to go back to view the forum in which the thread was started ? Wouldn't it … |
| | Hi all, I have a class which contains a struct that holds some variables, string, int's. Now, one of the variables (string) in the struct is used to compare it with a name, if the name is in the struct, it has to be [COLOR="Red"]returned from my function [/COLOR]with it's … |
| | Hi ladies and gents, Wanted to ask a simple question probably for you guys and the answer will maybe be simple aswell, but, I thought, what the heck, I'll go for it :) It just seems strange that when everyone tells to use <iostream> instead of <iostream.h>, <cstdlib> instead of …  |
| | Good evening ladies and gents, Had a question concerning this piece of code that I'm trying out from a book, it supposed to open a file, write text to it, close it, reopen it, append text to it and then write the text from the file to the console screen, … |
| | Hello ladies and gents, Got a question, is it wise to create a member of a class by using another class it's constructor and deleting it threw the use of that class it destructor? For example: [code=cplusplus]// Testing code. #include "first.h" int main() { first myMenu; bool gameLoop = true; … |
| | Hello ladies and gents, It's been ages since I posted here, have been doing some coding on and of and I was wondering about the following, beneath is a test I made in trying to use the new operator in combination with a string, first a string literal, second time … |
| | Hello ladies and gents, Ive got an exercise in which I have to fully parenthesize expressions using the higher-lower precedence, for instance: a+b*c would become (a+(b*c)) because multiplication has a higher precedence then addition. Here are my solutions for the following expressions: 1) a = b + c * d …  |
| | Hello ladies and gents, Gotta few questions if you don't mind: 1) Exc_6_4) Wrote a table of values for the bitwise logical operators and was wondering if any of you could check them out whether they are correct this way. 2) I have to write five examples of undefined behaviour …  |
| | Hello ladies and gents, Was wondering if any of you could help me out with the following, sometime ago I had to reinstall MS V++ EE and ever since then, when I enter for instance 'std::' or 'cin.' I don't get a list with all the possibilities it has, normally … |
| | Hi guys, This exercise goes as follows: - Write a function that counts the number of occurences of a pair of letters in a string and another that does the same in a zero-terminated array of char(a C-style string). For example, the pair "ab" appears twice in "xabaacbaxabb". Now, I …  |
| | Hello ladies and gents, I'm trying to copy two words, for instance test and word into an array of characters and have this: [CODE]#include <iostream> int main() { char word[10]= ""; char *wordArr[10]; for(size_t i = 0; i < 2; i++) { std::cin >> word; *(wordArr + i) = word; …  |
| | Hi, Got another question concerning an array of strings: I did it this way: [code] int main() { const std::string myArray[] = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; for (size_t i = 0; i < 12; i++) std::cout << myArray[i] << '\n'; std::cout … |
| | Hello ladies and gents, I just made the next exercise of this book and although it works as it should, [I]I was wondering if any of you guys could tell me whether or not it could be improved.[/I] The exercise goes as follows: - Define a table of the names … |
| | Hello ladies and gents, Was wondering if any of you could check this exercise out, I finished it, but, I'm not sure whether Ive got it exactly right, especially the last two definitions. The exercise is as follows: - Use typedef to define the types unsigned char, const unsigned char, … |
| | Hello ladies and gents, I'm reading The C++ PL from B.Stroustrup and in chapter 5 the second exercise goes like this: What on your system, are the restrictions on the pointer types char*, int*, and void*? For example, may an int* have an odd value? Hint: alignement. I actually have … |
| | Hello ladies and gents, Wanted to ask if someone could help me out with the debug settings in VC++ 2005. What I want to be able to do is to follow my program step by step and see what happens with the variables. I know it's related to the settings … |
| | Hello ladies and gents, I wanted to ask if any of you could help me out here, Ive got this program: [code] //Test programma voor Accelerated C++. #include <fstream> #include <iostream> #include <string> int main(int argc, char** argv) { int fail_count = 0; //for each file in the input list … |
| | Hello ladies and gents, I just wanted to see what this small programs does so I tried it in Dev-C++ and in VC++ 2005, thing was, it worked in Dev-C++ but not in VC++ 2005 in which I got an error stating the following: [QUOTE]error C2664: 'MessageBoxW' : cannot convert …  |
| | Hello ladies and gents, Ive downloaded the first four PSDK-FULL files and wanted to install these, but I don't know how exactly to do so. I tried to use winzip and extract them, but keep getting an error that says, failed to launch file: C\Documents and Settings\Johan Berntzen\Local Settings\Temp\install\setup\PSDK-x86.msi I … |
| | Hello ladies and gents, I wanted to ask if any of you could tell me what I'm doing wrong when I want to debug any program that Ive written in VC++ 2005 Express Edition. Reason is, after I put a break point to where the program has to run and … |
| | Hello ladies and gents, Ive been trying to find a solution for this exercise wich goes as follows: Rewrite the Student_info structure, and the 'read' and 'grade' functions, so that they calculate each student's grades as part of reading the input, and store only the final grade. Because the exercise … |
| | Hello ladies and gents, There's an exercise, well, more a question that goes like this in Accelerated C++: If the following code is legal, what can we infer about the return type of f? [code]double d = f() [n];[/code] What I can gather is that the return type will be … |
| | Hello ladies and gents, I had to do the following exercise: Write a (1)function that reads words from an input stream and stores them in a vector. Use that function both to write programs that (2)count the number of words in the input, and to (3)count how many times each … |
| | Hello ladies and gents, Ive recently downloaded VC++ 2005 EE, but, would prefer to buy a version of this. Now, the problem is that there are so manny versions. Since I'm a hobbiest I was wondering wich of these two would suit me the best. Visual Studio 2005 Express or …  |
| | Hello ladies and gents, in Accelerated C++ I have an exercise wich goes as follows: [quote]Write a program that will keep track of grades for several students at once. The programcould keep two vectors in sync. The first should hold the student's names, and the second the final grades that … |
| | Hello ladies and gents, I'm trying to do another exercise from Accelerated C++ in wich I have to write a program to count how many times each distinct word appears in its input. What I have untill now is this, [code] int main() { vector<string> theWords; string aWord; short count; … |
| | Hello ladies and gents, I'm trying to include a copy constructor and an assignement operator into this code wich has two separate classes, the idea is to copy the last name that was entered. Problem is, I can't seem to grasp how to get acces to the copy constructor in … |
| | Hello ladies and gents, I was trying to write a small example of a pointer to a two dimensional array like this after looking up how to write the syntax at Narue's Et.Conf. world like this: [code] #include <iostream> #include <iomanip> void array(short (*myArray)[4][4]); using namespace std; int main() { …  |
| | Hello ladies and gents, I was just wondering how you would implement this into C if it actually is possible, if not, how do you guys implement an equal way of dealing with this in C ? For instance, if you would have classes like this in C++: [code] class … |
| | Hello ladies and gents, I hope the moderators won't mind me posting this here, if they do, feel free to move it, but since it is related towards C++, I figured it belonged here ;) A while back I was browsing the GameDev forums and I found this thread in … |
| | Hello ladies and gents, Wondered if any of you could help me out here, I'm trying to increment an element of a vector of integers. Here's the code: [code] #include <algorithm> #include <cctype> #include <iostream> #include <string> #include <vector> using namespace std; int main() { vector<int> scores; scores.push_back(500); scores.push_back(600); scores.push_back(300); … |
| | Hello ladies and gents, Ive been reading about Virtual Function in my book and there is this programming that shows how and what happens, I understand what is happening but one thing that came to my mind is that, previously in my book, there was mentioned that you should allways … |
| | Hello ladies and gents, I was reading about how "Passing by References" for efficiency and there was a little program added wich shows what the difference is between passing by value and passing by reference is. The program is this one: [code] #include <iostream> using namespace std; class SimpleCat { … |
| | Hello ladies and gents, I'm reading about the algorithm partial_sum and there are two different versions of this. The first one just calculates cumulative numbers like this: [code] #include <iostream> #include <numeric> #include <vector> using namespace std; int main() { int a[4] = {10, 20, 30, 40}, b[4]; partial_sum(a, a+4, … |
| | Hello ladies and gents, Im reading about working with maps and there is small programm example shown in this chapter. Now, when I write this code into the MS VC C++ compiler and compile the code, I get like over 90 warnings, however, when pressing compile again, they all are …  |
| | Hello ladies and gents, Have a few questions about the following example that is given: [code] #include <iostream> #include <fstream> using namespace std; int main() { char ch; int n=0; ifstream ff("aa"); if (!ff) { cout << "Can't open file aa for input.\n"; return 1; } ofstream gg("bb"); if (!gg) … |
| | Hello ladies and gents, In my book, I'm currently reading about the use of creating your own operators << and >> for in- &output. There's been given a small example that goes like this: [code] #include <iostream> using namespace std; class vec { public: vec(float x1=0, float y1=0) {x = … |
| | Hi Narue, Ive started your tutorial on pointers and had a few questions about it if you don't mind. 1) You talked about the fact that a function has an adres itself and that you can call a function threw it's adres. This I understand, as I tried it out … |
| | Hello ladies and gents, I had to do an exercise in wich I was required to compair two standaardtype strings opposits, meaning: name = "Johan", name2 = "nahoJ" The idea was to return a bool value True or False. I did this with the following code I wrote:[code]#include <iostream> #include … |
| | Hello ladies and gents, Came across a program example in wich you are able to sort program-parameters in alphabetical order. The code is this:[code] #include <iostream> #include <string> using namespace std; void sort2(char* &p, char* &q) { if(strcmp(p, q)> 0) { char *h; h = p; p = q; q … |
| | Hello ladies and gents, Ive been reading about how when a class becomes to big due to to many memberfunctions, it is best to split the program up into several sections wich could be something like this: Interface section Implemenation section Application section I was given an example wich is … |
| | Hello ladies and gents, Ive been reading about when you have a very large program, that it is advisable to divide this into several modules. Ive tried this out with an example of two separate modules that where given as examples and managed to get two .cpp modules into the … |
| | Hello ladies and gents, I'm trying to output a 2D array, but can't seem to find the solution, can anyone help me out here. [code] #include <stdafx.h> #include <iostream> using namespace std; int main() { int **pp; int i, j, n, ni; cout<<"Geef het aantal regels als volgt: "; cin>> … |
| | Hello ladies and gents, Wanted to make this part of an exercise in wich I enter each time two integers into an array for wich I have to use STL container vector. Ive got this sofar, but getting an error message when I entered two numbers and the exe shuts … |
| | Hello ladies and gents, Ive got a question concerning how to actually send a program to someone (only the exe.file) so that he/she sees what the program can do without having the possibility to alter anything towards the code itself? I'm using Microsoft Visual C++ 6.0 incase you need to … |
| | Good evening everyone, This next exercise, I have to do the following: Write a ClassTemplate for a linked list. Demonstrate it by using two linked lists. The datafield of the first type is int, the second one is double. What Ive got sofar is this: [code] #include <iostream> #include <vector> …  |
| | Hello ladies and gents, I wanted to ask if this piece of code can be written differently then the way I did: [code] template <class V> void sequence3(V &a, V &b, V &c) { V w; while (a > b || b > c) { if (a > b){w = … |
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