51,593 Topics
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| | hey all i am new to all this languages and Computer sciences so if you help me i am trying to write a code and its constantly giving me errors here is the code at line 10 , 102 , 115 tell me how to fix it.. waiting... #include<iostream.h> void … |
| | I am trying to create a function which adds an array to another array and replaces the data in the 1st array with the new data. For example, A=A+B. However, when I write my code as below, I get the error C2676:binary '[' : 'const Matrix' does not define this … |
| | Hi Guys, I'm stressing out over this project. The majority is done. I keep getting an buffer errors. I'm stuck and can't figure it out. I did call stack and it took me to the last parenthesis in main. The closing parenthesis. Also I can't figure out why my card …  |
 | I keep getting errors and I don't know why.. #include <iostream> using namespace std; class IceCream{ private: int flavor[3]={0,0,0}, topping[3]={1,2,3}, scoops[3]={4,5,6}; public: int getFlavor(int); int getTopping(int); int getScoops(int); void setFlavor(int); void setTopping(int); void setScoops(int); }flavorX, toppingX, scoopsX; int IceCream::getFlavor(int choice){return flavor[choice];}; int main() { cout << flavorX.getFlavor(1); system("PAUSE"); }  |
| | Is it possible to have a piece of C++ code display a picture and how? I want to display something for my Uncle's employees at a conference were holding with them and I don't know how to display pictures, if there is a way.  |
| | ok i dont quite know why i keep getting these error in my program.. here is the program: #include<stdlib.h> #include<stdio.h> #include<math.h> Void open(void); int read(float*); float average(float*); void write(float*,float); void close(void); FILE *fptrin,*fptrout; main() { float number[10],non,ave; open(); read(number); non=read(number); ave=average(number,non); write(number,ave,non); close(); return(0); } void open(void) { fptrin=fopen("avg.dat""r"); if(fptrin==0) …  |
| | So I was given the assignment that asks user to enter file name, then the program will read all integers from the file (unknown number of integers) to an array, and display highest, lowest number, average and number of integers read. The only problem that I have with this is … |
| | For example if my string is "^^^^^^Big^^^Bob", i want to turn it in to "Big^Bob"  |
| | why the code is not running? #include<iostream> #include<string.h> using namespace std; class person { char name[20]; float age; public: person(char *s,float a) { strcpy(name,s); age=a; } person & person::greater(person &x) { if(x.age>=age) return x; else return *this; } void display(void) { cout<<"Name:"<<name<<"\n"<<"Age:"<<age<<"\n"; } int main() { person P1("John",37.50),P2("Ahmed",29.0),P3("Hebber",40.25); person P('\0',o); … |
 | Hello All, i am trying to tidy-up some code and i'm not completely sure how this can be done. What i have is this: (This is some sort of psuedocode that i just wrote to explain the problem, not proper code) void foo1(typeofList1 list1) { for (i = 0; i … |
| | Im trying to read in data using both getline and cin from a file. But, it only reads in the first line and it leaves everything else empty and/or gives garbage values. output: John Brown grades: 73 57 94 grades: 0 32767 1252009800 grades: 0 0 1263344400 /* data.txt John … |
| | here my code now my problem i wonder if you can do something to access specific method from each object example i want to access from Dalek class his method but i cant do this "alien[i]->" will only access method from class ExtraTerrestre any help will be appreciate sorry for …  |
| | I am having a hard time figuring out polymorphism with vectors. I keep getting random numbers which I'm guessing is the memory location. If that is the case what am I doing wrong with pointers. And here is part of my .cpp file. Thanks in advance for your help. // … |
| | You are to write a program that will do the following: Part 1 (30 pts) Grade a 30 multiple-choice question exam and print each student’s name followed by the score (number of correct answers), the appropriate calculated percentage score (number of correct answers divided by 30), and letter grade for …  |
| | We started learning Heap property in class. Here is an exercise on the topic: > isHeap > Write the definition of a function named isHeap that receives three arguments as follows: > x : an array of ints > i : a valid index into the array x > n … |
 | I'm a student and I have to make a program with Console application to manage a Bank Account, using Classes. The program must be able to: - Create e new bank account - Deactivate a bank account - Draw money from account - show the account balance I tried to … |
| | Im not really sure if you guys do graphics.h questions here but here it goes. Im trying to find out how to get text to scroll similar to credits at the end of a movie from top to bottom but to have it repeat. I cant find online anywhere that … |
| | Hi, i am trying to make a dictionary which takes an english word and its meaning in spanish in the following format from an input file. <english>:<spanish> i also need to add words manually,remove,search,print ,and store new tree in the same file by updating the file. my up() and load() … |
| | `Inline Code Example Here`**I REVISED MY PROGRAM** #include <iostream> #include <cmath> using namespace std; int main () { const int num=100; float volt[num], sum=0, sum2=0 ; double ave2,standrddev1, standrddev2, standrddev; float average; int i, k=0 ; { cout<<"Enter the number of voltages to be analyzed:"; cin>>k; if (k>100) { cout<<"Maximum …  |
| | Hello, I am tryinng to write a program that uses the cin.getline() function to get a users input, but I only need the numbers from this. The problem I am having is when I enter a number then other character it will count the characters after the numbers as numbers …  |
 | Hi frnds..im Saravanan..im studyng my BE in Govt.college of technology,coimbatore...in our college around 84 companies are coming for computer science students...lik microsoft,comvault,etc...bt i hav second thoughts!!...i want to achieve somthing great...we should prove that we are more worth in this world than modifying an old softwares...we hav to invent somthing … |
| | # we are assigned to develop a c++ program that accepts a list of a maximum of 100 voltages as input, determine both the average and standard deviation of the input voltages, and then displays the results. There are still errors and it says it requires array or pointer type. … |
| | # Develop a c++ program that accepts a list of a maximum of 100 voltages as input, determines both the average and standard deviation of the input voltages and then displays the results. # ## step 1 : requirements : an average, standard deviation step 2: develop solution: the input … |
| | i started reading about templates and i got confused on the below. template<class T> T max(T t1, T t2) { int if (t1 > t2) return t1; return t2; } int main(){ std::cout<<max<int>(120,14.55); return 0; } o/p is 120 .But when i compiled the above i got the below warning. … |
| | In the following program i can't access balance value of parent class in the child class. If the child class can access all attributes and methods of parent class, then why i am getting 0 value when i access parent class balance. Anyone please help, my programming understanding is very … |
| | So the program compiled but as soon as you enter a number for the length of the word it comes up with a segmentation error. Here is my code .h #ifndef GUESSER_H #define GUESSER_H #include <string> class Game; class Guesser { public: // Initialize the guesser for a game with … |
| | Hello! I need to read 50 intergers from a text file and put them in an array.Then I have to seperate the numbers into different arrays to see if they are even or odd. This is what I have and all I get as a cout is a place in … |
| | So my program is running just fine and doing what it should beside one little thing. That thing is when I run the formula on the for loop. What it does is when I put in 5 and select the for loop operation it gives me the right answer. But … ![Member Avatar for Prysm[VA]](https://static.daniweb.com/avatars/4/member1029500.jpg){kind=small} |
| | Can some one briefly tell me about that how to do fileprocessing in c++ |
| | Next exercise from codeLab that I am getting logical error indication for. What am I missing? Thanks in advance. > You are given an array x of string elements along with an int variable n that contains the number of elements in the array. You are also given a string … |
| | This is for the more experienced folks. Recently I found that in Visual C++ 2010 (and 2012, not sure about earlier versions) one can use a std::string as the file name argument for the .open( ) function. I've always known the .open( ) function to take only char* (C-style) strings …  |
| | Hi everyone I hope you guys could give me a hand with this project, I am not an expert of c++ and i am really struggling with this. here is the problem: I been asked to make a programn as follows: A new railway journey planner is required to help … |
| | can anyone tell how to make delete function for my program.......and how can i insert more than one value .....ie whenever i insert a value ........the program inserts and then exits.....Thanks in advance!!!! #include<iostream> using namespace std; class linkedlist { private: struct node { int info; node *next; }*head; public: … |
| | Error 6 error C2143: syntax error : missing ';' before ')' c:\users\datacompress.cpp 214 1 Error 8 error C2039: 'putSymbol' : is not a member of 'std::basic_ofstream<_Elem,_Traits>' c:\users\datacompress.cpp 291 1 Error 9 IntelliSense: class "std::basic_ofstream<char, std::char_traits<char>>" has no member "putSymbol" c:\users\datacompress.cpp 291 12 #include <fstream> #include <string> #include <iostream> #include <ostream> … |
| | I have an assignment on the data structures directed graph and I have got this question but I did not understood what exactly it needs Here's the question : There is a list of nodes and edges like A B B C D E F B The first line says … |
| | Hi, another codelab sorting exercise I am having problem with. any advice is appreciated. ---------------------- > You are given an array x of int elements along with an int variable n that contains the number of elements in the array. There are no duplicates in this array. You are also … |
| | I have several files to include from a subfolder and I just can't get this to work. I'm propably missing something here... The Makefile and .cpp with main function are located at /path/to/ and files to be included are at /path/to/src/buffer and /path/to/src/hash. Both of these folders have .cpp and … |
| | Hey guys, I've tried writing code to reverse my sentence, but I keep getting an error in my for loop saying "Expected Expression". Also, should the asterisk go after the "modify" in my code? I'm not sure how pointers are exactly supposed to work and I haven't been given any …  |
| | I won't be asking for a source code yet. What I need to figure out is the process of a certain Math problem with the equation that seemed to be impossible to be converted to source code. Here it goes: **A certain waveform is 0 volts for time less than … |
| | cant get this to run on my compiler, any idea of where im going wrong in my code here, any help would be so helpful #define pi 3.1415926535897 #include<iostream> #include<math.h> using namespace std; int main () { double lat1=pi/180; double long1=pi/180; double lat2=pi/180; double long2=pi/180; // initilaise values double latz … |
| | My professor asks me to program the Game Of Life with some required and I find unnecessary classes. But anyhow as I am coding and running the program midway I run into this problem void Life::setup_grid() { cout << "Size of Grid: " << grid.size() << endl; cout << "rows: … |
| | Hello, I am working on a homework problem that has to do with inheritance, I thought that as long as the class interface and implementation files for the base classes the derived would work with the include statement: #include "salariedemployee.h" and the line class administrator : public salaried employee. I … |
| | This is the exercise I have in codelab. I've been going over and over, and just can't see how to do it without an array. Must be something simple that I am missing. Any suggestions? _____ Assume you have a int variable n that has already been declared and initialized. … |
| | Hello All, I needed some clarifications w.r.t making functions thread safe. Now, i understand that irregularities can occur in results when not making functions thread safe. But could this somehow lead to a crash? (say some illegal access of memory) Could anyone please give an example of this(something that you … |
| | How would I pass an element in a struct array. I have to call the function: new(Shoe[num], num); where num is the number of elements in the database. I have declared the function as: void new(Shoes Shoe[], num); but I get the error: cannot convert 'Shoes' to '*Shoes' for argument … |
| | Does anybody has a hint how can I learn game development for slot /fruit/machines?? Thanks !! |
| | I am using windows 8 and i just installed dev c++ in my computer but whenever i type a c program and compile it,it gets compiled but when i run it, it says source file not compiled.. any help is appriciated!! |
 | hello people I just started to learn C++ 3 days ago, I am just 13 yrs old I have made this basic maths utility tool or you can call it a calculator but it tells everything, multiplication, division, addition, subtraction at once. // if you could help me with it … |
| | I need help with a program i am writing( i am new to programing). I am writing a program to Coordinates have the form (x, y, z) Use double variables to represent the private data of the class. Provide a constructor that enables an object to be initialized when it … |
| | Hello There, I am currently making a small game in c++ and Qt. In the game, an npc call's the Wander() function which makes it randomly wander around. However, only one of these npc's can call the Wander() function at any one time - Is there a way around this? … |
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