struct x { y *GetY(); //error: what is "y"? struct y { }; };
Why does GetY have to be declared after struct y is declared? I thought order of class members in C++ did not matter? Does it have to do with the way parsing is done?
EDIT: It also doesn't work if I typename x::y *GetY();, which makes even less sense to me.
EDIT: It works if I forward declare, but this goes against everything I know about C++ classes...
I seem to get an error after int main (void) saying 'a function definition isnt aloowed here before { token? And then also at the end of main saying 'expexted } at end of output?
My programme is trying to create a random array of 100 ints between 0 and 250, sort them and print them.
Here is my code:
#include <iostream> #include <stdio.h> #include <stdlib.h> #include <time.h> #include <cstring> void bubbleSort(int *array,int length)//Bubble sort function { int i,j; for(i=0;i<10;i++)
Ok, so I'm writing this code and when I build it keeps saying cannot implicitely convert type int to string even though I declared my variables as string. Why is it giving me this error?
private static string Repair() { string result=""; string beep; string spin; Console.WriteLine("Does your computer beep on startup?:(y,n)");
I am trying to make a automated menu. It shows there are no syntax errors but when compiled it says cannot convert choice from type into to menuItemType. I am not sure what I did wrong. Here is the code
I'm quite new to C and these days I have been playing around with a linked list. I managed to make a working version using pointers, ad only for the sake of learning I was trying to do the same thing just passing the "Object reference" Here is the method that apparently doesn't work..
Code:
struct Node addNode(struct Node head){ int value; struct Node *n; printf("Please enter the value "); scanf("%d", &value);
[Code]...
when I return the function i have something like: head=addNode(head)
Unfortunately it does not work the way I aspect. I suppose that there is something I have left out..
Code: like n->next=&head // passing the address of the head at the next pointer of the struct head =*n //copy the values of the new node to the old head..
There must be something wrong with this line.. return head; What have I done wrong?
I have this struct and i need to sort it by genre and then by artist so genera is sorted alphabetical and then the artists are alphabetical. I know and have a working bubble sort to sort them by songName but can't seem to figure out how to "double sort" them?
Example radix sort function to sort an array of 64 bit unsigned integers. To allow for variable bin sizes, the array is scanned one time to create a matrix of 8 histograms of 256 counts each, corresponding to the number of instances of each possible 8 bit value in the 8 bytes of each integer, and the histograms are then converted into indices by summing the histograms counts. Then a radix sort is performed using the matrix of indices, post incrementing each index as it is used.
Code: typedef unsigned long long UI64; typedef unsigned long long *PUI64; PUI64 RadixSort(PUI64 pData, PUI64 pTemp, size_t count) { size_t mIndex[8][256] = {0}; /* index matrix */ PUI64 pDst, pSrc, pTmp; size_t i,j,m,n; UI64 u;
I need writing my header files for my program of hangman. I've written what I could, but when I try parts out on their own to see if they work, I get errors. I haven't written my driver yet since I wanted to get this header working first. The first function needs to take the name of the file and read in its contents into the globally declared array. The second function takes no arguments and returns a word from the word list chosen at random. I guess my question is, would what I have so far work, or am I completely off? Here's what I have so:
randword.h #ifndef _randword_h #define _randword_h //static char words[100][50]; /* *Function: InitDictionary *This function reads in the dictionary of words and puts them into an array. */ void InitDictionary(void);
You might notice that the above code doesn't compile, this is the error:
cannot convert parameter 2 from 'BYTE [2][4]' to 'BYTE *' 1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Even after some search I couldn't really find an answer to my problem, how do I pass the const BYTE array which I declared above in the function as a parameter (or what structure do I need to set for the function as a parameter)?
I'm having some problems with Input to an array from a file. I think that i need to make a new array for every instance of the loop but i can't figure out how.
I am trying to read a tab delimited file containing 8 columns and store each element of the column as an 1-dimensional array. Though the program prints the strings correctly as in the commented printf but it doesn't give me first_col[0] value and so on. My code is as follows:
Code:
#include<stdio.h> #include<stdlib.h> #include<string.h> int main() { FILE *int_file1; int BUF = 1024;
[Code]...
The inputfile test.txt has the following elements:
I tried to make this code to output an array in Ascending Order but the output is showing weird output like 001fgc123 multiple times instead of the array.
What is wrong with my code?
#include <iostream> using namespace std; void ascOrder(int Array[],int length) { int n=0,i,orderNum=0; while(n<length) { for(i=0;i<length;i++)
I wrote this simplified version of a program i am writing that parses data in UDP packets. In the process of doing so i pretty much answered all my questions and fix all the problems i was having.
decodeSystemMap function will be in loop, and will proccess packets that have mostly the same data, only a few items will be added or changed or deleted.
whats the best way to check if there are any new, deleted, or removed items in the packet and only modify those? Is there anything unsafe / dangrous about the way the code is now?
Code: /* * File: main.c * Author: david * * Created on May 23, 2013, 11:57 AM */
I am new to C++ and I am having an issue reading in a 2 Dimensional array from a data file. I am very close to reading it in perfectly except for one issue, the loop is ignoring the first value from the data file.
I'm having issues trying to input data from a .txt file into my array program. The whole program takes the name, # of goals and assists, adds them together to get points, and then puts in a given + or - rating. The program works except for the data input.
Also, this is an alphabetical "Unsorted" list, but is there a way to order the list based on point value and be able to display that as well as a separate "Ordered" list?
And this is the .txt file. Order is Players Name, Goals, Assists, Plus/Minus rating. The points are added when points = goals + assists (Should be in the main coding above).
I am trying to store each value of a column from a text file into an dynamically allocated array, which needs to be globally declared for further usage in the program.The input textfile contains the following:
#include<stdio.h> #include<stdlib.h> #include<string.h> int main() }
[code]....
The commented printf line gives the entire values of the column, which proves that the file is correctly being read.But on compiling this program I get both compiler warnings and finally segmentation fault.
I'm trying to use a priority queue sorting in reverse order to take a vector or 2d array. The problem is that I want to sort by the vector/array cell value but keep the reference to the vector/array index of the value. I don't know quite howto keep them both related so when I pop. I can find the corresponding cell.