[pointers] Forum Topics

If anyone can help me finish this and point out what had to be done to make the program work, that would be great. -ask for how many days user wants to enter from 1-365 (validate) -ask for temperature for each days between -60 and 90 degrees celsius (loop, validate) …

My program begins by opening a dictionary file, the first line of which contains the number of words in the dictionary. If I print the words immediately after scanning them into the arrays, they appear fine, but if I later examine a previous entry, I can see it has been …

[CODE] FILE *ranch; FILE *myfile; char line[500]; case 1: ranch=fopen("garrudaRanch.txt ","w+"); if(ranch != NULL) { printf("Enter amount of Corral: \n"); scanf("%d",&corral); fprintf(ranch,"%d\n",corral); printf("Enter size of Corral: \n"); scanf("%d",&corrals); fprintf(ranch,"%d\n",corrals); } fclose(ranch); break; case 2: myfile=fopen("garrudaRanch.txt ","r+"); if(myfile != NULL) { //fscanf(myfile,"%s",line[1]); printf("Number of Corral: %s",line[1]); printf("Size of Corral: %s",line[2]); } …

Could you please tell pictorially difference bw these 2 codes(o/p is same) and suggest any source where i can once in for all resolve doubts in pointer to pointer problems except "K&R in ANSI C" [CODE]#include <stdio.h> #include <string.h> void pointer(char**); void main() { char *p[]={"name","fame","claim"}; pointer(p); } void pointer(char …

I am trying to experiment with C++ to make the command prompt function like MatLab or Octave. This is a practice file I've been doing so I could pass functions as parameters to other functions. My problem is with this function call found in line 36 [CODE]compute(gset[function-1], input);[/CODE] This is …

struct looks like this: [CODE] struct ListNode; typedef ListNode* ListType; struct details { char first_name[20]; char last_name[20]; int start_number; int end_number; }; struct ListNode { details data; ListType next; }; ListType list = NULL; ListType head = NULL; ListType * PointerToHead = &head; [/CODE] I have a circular linked list …

Below is the link to a picture of the debug error window [url]http://www.flickr.com/photos/76298377@N02/6798897020/in/photostream[/url] It's a program that i'm doing and I keep getting this error here's a link to the programming problem. Its' Number 3 [url]http://books.google.com/books?id=bSy1hBCLNl8C&pg=PA335&lpg=PA335&dq=sales.dat+c%2B%2B&source=bl&ots=mmN9b4WzsN&sig=miAD8-u4ly8K1Mou9ZNHv90Nscc&hl=en&sa=X&ei=2wdQT_-4OtSCsgK-l5WyDg&ved=0CDcQ6AEwAg#v=onepage&q=sales.dat%20c%2B%2B&f=false[/url] Why am i getting this error. I'm clueless [CODE] #include <iostream> #include <string> #include<stdio.h> …

[CODE]void alternate(char wordWord[][MAX],char wordVar[],int word[],int i,int j, int k, int l) { char ang[4],si[3],ni[3],ay[3],sa[3],kay[4]; int X,Y,Z1,Z2; strcpy(ang,"ang"); strcpy(si,"si"); strcpy(ni,"ni"); strcpy(ay,"ay"); strcpy(sa,"sa"); strcpy(kay,"kay"); tokenize(wordWord,wordVar,word,i,j,k,l); if(wordWord[j][k] == ang[4] || wordWord[j][k] == si[3]) X = wordWord[j][k]; else if(wordWord[j][k] == ni[3]) Z1 = wordWord[j][k]; else if(wordWord[j][k] == ay[3]) Y= wordWord[j][k]; else if(wordWord[j][k] == sa[3] …

I've been trying to figure out whats wrong here, but I just can't wrap my head around it. My compiler outputs the following when I attempt to compile it. [CODE] z:\Desktop\tmp\proj4>cl proj4_linkedlist.c Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86 Copyright (C) Microsoft Corporation. All rights reserved. proj4_linkedlist.c …

Recently I started learning c and was experimenting with arrays and passing them between functions. Now I have written a simple piece of code which has two functions one for generating random numbers and putting them in an array of size 50 and one function to display the contents of …

I have some code in C++ that uses an std::vector of std::strings to store an array of strings. I need to convert it into C. I thought that I would just create c versions of the functions I need (vector.back,vector.push_back,string.operator+=) but am getting lost in the double pointers. Can anybody …

int main(){ int near * ptr=( int *)0XFFFF; ptr++; ptr++; printf(“%p”,ptr); return 0; } Output:0003 why the op is 3 and how to convert 0XFFFF into its decimal equivalent?

I'm writing a program that takes records(first and last name,id and mark), reads them from a file and inserts the information in StudentRecord structures. For some reason,when I go to list the information, the first and last name strings in each structures are all the same. The first and last …

I am trying to pass some url information into tokenize_urls from process_and_display_information. To get things up and running, I am simply trying to return and retain some array data from tokenize_urls into process_and_display information. However, I am running into an issue where the variables are created and sent back from …

[CODE]#include <iostream> using namespace std; class X{ public: int p; }; int main(){ int b; X obj; int X::*ptr = &X::p; obj.p = 100; cout<<obj.p<<endl; cout<<ptr<<endl; cout<<obj.*ptr<<endl; system("pause"); return 0; }[/CODE] When i run this program, i get the output as: 100 1 100. I understand why it shows 100...but …

well i am trying to pass this parameter in a function -->[ICODE]char*[I]filename[/I][/ICODE] [CODE] [U][B]//i just wrote this as an example to explain clearer my question[/B][/U] #include<stdio.h> #include<stdlib.h> void try (char *[I]filename[/I]) //[B] the question is how can i use the pointer to refer to a file? [/B] { printf("try"); } …

guys I've been trying to write this lab for my comp sci class for three days now. i've got to the point where it compiles but when I try to run it a table pops up that's says there's an error somewhere in the program that causes it to abort. …

Hello daniweb, I've been having problems with a program I'm trying to make, in my function definitions, I'm trying to reference the output of one function in the other's definition, but not sure how to, I'm guessing pointers could help me but I'm not sure how to use them: These …

Hi everybody, i am new to c++ and wanna know why pointers are useful ? Why would i use them ? For what ? THANKS

Something is not going right in the following code. I am taking an array of strings from user and printing at the same time. Array can have [B]noe[/B] no. of strings, as noe is entered by user. [CODE]#include <stdio.h> int main(){ char **p; int noe=0,i=0,j=0; scanf("%d", &noe); p=malloc( noe * …

I'm new to programming and C++. I've managed to succesfully insert multiple nodes from front. Problem is that when printing it starts with the latest node and goes "backwards". I would like it to start with the first node and print forward. Therefore I would like to insert new nodes …

[CODE]#include <iostream> using namespace std; struct account { account(); int accountnum; float balance; float interestrate; }; account::account() { accountnum = 50; } struct account2 { account2(); account * data; void test(); }; account2::account2() { } void account2::test() { data->accountnum = 1000; } int main() { account test; account2 test2; cout …

Good day everyone. I am back from some previous months of extensive schoolwork. I am creating now a payroll application, but I think there's something wrong in my code, because it created an output that's not my intended output. Wait, guys, I'm confused. Is this appropriate for a C forum …

I am having problem with converting and initializing errors. Any help is appreciated. I am a 2 yr Computer Science major, so be gentle. Here is Code: Sorry its long! [CODE]// Kyle Bennett // CS 318 // Paint Throwing Disturbance #include <iostream> #include <iomanip> // set width and decimal #include …

Hi, I am trying to work on creating a linked list of player in a game, but I have not written code in a while and have no idea what I am doing wrong, can you please help with suggestion of what I did wrong or idea of how can …

I am working on creating a linked list to connect the previous value number (or string) to another value I asked this question before I am just guessing I did it completely wrong since no one responded. So what would be the best way to start the function. I need …

Hi everyone! In class we just learned about pointers and the their uses. We have been given a project where we need to allocate dynamic memory for any number of matrices (up to four). All four of the matrices addresses are stored in a matrix poiner. All of this must …

Hi, I'm a beginning C++ student and have an assignment to dynamically create an array of a struct to store students' first names, last names, and test grade scores, and then pass it via pointer to a function that will sort the grades and names in ascending order. I wrote …

Using pointers to structure in C#. I get an error 'Cannot take the address of, or get size, declare a pointer to a managed type' on the line "MyStruct* pMystruct", I have been trying to find out a solution out of this, but in vain. please help me out with …

Hey - I'm looking for something similar to using vectors and pointers that I've used before in C++; unfortunately, it doesn't seem like there's an equivalent function in VB.net. What I have is a copy of the array behind a multi-line Rich Text Box, and I need to separate the …