I'm writing code to create an array of integer and let user input choice to display, replace, add new element, etc.I created a header file in the header file there's a function:
Code:
int display_one_element(int* array, int num_of_elements, int position) { if(num_of_elements < position || position < 0) { printf("Position out of bound. "); return 1; } return array[position-1]; }
My code seems to work fine but there's an error message right next to my function call: 1.too many arguments provided to function like macro invocation 2.Expression result unused
I tried to move the function from header file to c source file. but other functions in the header file works fine and this doesn't work with the error message.
I need to create a main function with a one dimension dynamic array with float data type. The total number of array elements must be controlled by a user input from the keyboard. Test data is three different lengths 3,6,9 of the array. The lengths have to be set up at run time from users input. I understand how to create dynamic array but not where the user inputs the length of the array. How would I implement this?
I'm getting error ID 10061 - WSAECONNREFUSED - No connection could be made because the target computer actively refused it. This usually results from trying to connect to a service that is inactive on the foreign host—that is, one with no server application running.
However, when I use 127.0.0.1 or localhost dns, everything works fine, Im connecting to the ip from [URL] .... with port 1337 ...
As requested by an exercise I have to write a function which:
- takes as parameter 1 unsigned which represent a timout value, 1 string which represent an IP address and an array containing port's numbers - sends an UDP packet (1024 byte with NULL content) to each pair <IP,port> - waits for the first reply, if it receives a packet within the timeout (set by select() function), the function returns the port of the process who replied, else it returns -1
I think I can do anything of above, but I've not understood how to set and use the select() in this case.
This is my code as it is at the moment
#define BUFLEN 1024 int comUDP ( unsigned timeout, char* ip, int ports[] ) { int s_ds_sock, c_ds_sock; struct sockaddr_in server_socket, client_socket; char msg[BUFLEN] = NULL; //message to send to the clients fd_set fds;
I am a beginner with C++, taking a class right now. The lab this week is to create a user defined class and have it accesses in a separate .h header file from the main.
I think I'm finding my way through it, but I'm getting a complie error that makes no sense to me:
I wanted to create an asynchronous/non-blocking udp client server application where the client and server were supposed to chat away with each other without waiting for each other's turns. I came to know that this could be done by select()... here is my Server(Mentioning only the communication part):
At first on the server side I wrote: int rv = select(n, &readfds, &writefds, NULL, NULL);
But that led to the printing of an entire empty array on the server console when the server initialised in addition to the fact that communication between the server and client was not proper. removing "&writefds" did remove the redundant data but the improper communication issue still persists...
Ok so I am working on a game and I'm in the process of developing my Player class. Anyways, what I have is a keyboard function that is called in my main function to make a shape move.
void myKeyboardFunction(unsigned char key, int x, int y) { switch ( key ) {
[Code].....
But when I try to call it, trying to copy my previous method,
glutKeyboardFunc(Player1.playerControls);
I get an error
error C3867: 'Player::playerControls': function call missing argument list; use '&Player::playerControls' to create a pointer to member
I get an error saying it can't convert parameters. I would just like to understand why the arguments become a problem when I make the function a member of my class, when the first method I used is so easy.
The function is supposed to return value from the file in my main, but I am getting empty value. I am trying to get better with pointer. Right now just teaching myself.
right now the only way for this code to show value is when in put the putchar(*ps) inside my readfile function. I would like to readfile to return value and print in the main function.
I have a struct called Array and I'm to create a function to create a dynamic array that's fill with randomly generated integers from 0 to 50 (inclusive) and a function to destroy the array for freeing its memory. Below the code that I have written so far.
Code:
* Struct */ typedef struct {int *pArray; //the dynamic array int length; //the size of the dynamic array}Array; /* Function to create a dynamic array */ Array *initializeArray (int length) {int i; }
I am writing a program in which a Fucntion has to be wriiten to parse the Command Line . When I include Code for parsing in main fuction iteslf ,its run ok . But I want to make a fucntion of that code and call it from main ,than it show Segmentation error .
By using Debugging I found Some thing is mess with " -m" Parameter of Command line , But Cant Rectify it ..
Code: int main (int argc, char *argv[]){ //get_parameter_value(argc,argv); // buffer[packet_size+1]= char ("'"); while (argc > 1) { if (argv[h][0] == '-')
int example (int [], int, *int,*int,*int,*int); int main () { My code will be here example (int array[], int size, &a,&b,&c,&d); // Like this??? I try it didnt work
#include <iostream> #include <string> #include <ctime> // to use the time function #include <cstdlib> using namespace std; int getUserChoose (int);
[Code] ....
here is the output
Welcome to the program of Rock, Paper, Scissors The computer is ready to play the game Are you ready to play the game Y for yes and N for no Y R = Rock; P = Paper; S = Scissors R You have choose Rock 1TN 1RM 0U 0C
I'm currently writing a poker game and am trying my best to avoid using global variables. I have a few variables in int main() which i was hoping to use to store the value of each players hand. I then created a function which calculates the value of the hand but cannot get this value back into the main function.
For example:
Code: #include <iostream> using namespace std; void getValue(int value) { value = 4;
[Code] ....
Is there any way i can get the value of value using this function? If not what can I do?
This code is for a program that allows you to play a guessing game or arithmetic game and shows your total score from both as you go along. The program works fine the only problem I'm having is with the score. Is there a way to call the score value from the outside function into main?
So trying to pass the value of score from the outer function int guessGame() into the score print statement in choice 3 of the main function? Oh and the "17 -turn_count" was just part of the requirements of the assignment.
I am just practicing some recursion and I am having trouble with printing out a recursive function in main. Here is what I have:
Code:
// This function adds the squares 4, 5 = 4*4 + 5*5 recursiveley int recursive_sumSquares(int m, int n) { if (m < n) { return m*m + recursive_SumSquares(m+1, n); } else { return m*m;
[Code]...
I am getting an error that says undefined reference to 'recursive_SumSquares'
I have i want to call a function with two results for example x = 1 and y = 2.How do i return this function in c and how do i call such a function in the main program.
But how to define a shape (say a circle by that cir() function which is) outside of the main() function? And how to attach it to be visible on window win?
Get user input should be done in a function. The function should read the product number, price per unit, and quantity sold and return them to the main().
Display the value of product number, price per unit and quantyty sold in main().
I have simple LCd_call function . I am calling this function from main . I wanted to call this function once. problem i am facing here, When lcd_call function being called. It enter the cases but instead of staying paricular case it coming back and starting case 1 iteslf . for every 6s it change the case to 1:
I know how to define a shape (here, a rectangle) and attach it to a window in C++ as follows:
#include <Simple_window.h> void cir() { Circle c(Point(100,100),50); } int main() { Simple_window win(Point(100,100),600,400, "test"); Rectangle r(Point(100,100),Point(300,200)); win.attach(r); win.wait_for_botton(); }
But how to define a shape (say a circle by that cir() function which is) outside of the main() function? And how to attach it on the window win to be visible?