gerard4143

The return value of fork() will explain your questions RETURN VALUE On success, the PID of the child process is returned in the parent, and 0 is returned in the child. On failure, -1 is returned in the parent, no child process is created, and errno is set appropriately.

If you want simple and complex then try VIM...

Because Perl has so many esoteric built-in variables like - @_ or $_ or $. or $` or $& or $' or $^I...it can make the code very messy(like line noise) to the uninitiated .

I'm not sure what your trying to accomplish here...Do you want to read each character and display it on its own line? I quickly wrote this. It will output the characters like you posted [code] #include <stdio.h> #include <stdlib.h> int main(int argc, char**argv) { char ca; FILE *fd; if (!(fd …

Its been some time since I did any SQL but won't it be a more natural fit to use UPDATE WHERE to update a record

How are your integers stored? Big or small endian? Also, are your integers 2 or 4 bytes?

Number one. If your passing a pointer to an array then your function should accept a pointer to an array. int listrented(cars_t * cars2) { printf("Testing...\n"); /*shoud return something here*/ } Number two. When you call a function, you don't declare the varibles > if(choice == 3) listrented(cars_t cars[]); /*should …

A pointer is just a variable, so coping a pointer into a pointer is done just like you showed. char *name1; char *name2; name2 = name1; Now both name2 and name1 point to the same memory area.

It doesn't matter, its just uninitialized memory. Why do you think its a memory pointer? It could just as easily be a signed/unsigned interger...Memory is not self defining, its whatever we(the program) say it is.

I have a question about istream iterators and reading the input to the EOL. How do you do it? I tried the following but had to revert to a hack to get it to work. My first attempt reads from the istream but a word at a time. first.cpp #include …

Triy this link on va_arg http://www.cplusplus.com/reference/clibrary/cstdarg/va_arg/

On line 27 you have a semi-colon else if (s[n] == 12); { I think that's your problem

I think you should use a for statement to loop through your myArr array, comparing each element to the calculated average.

Maybe, in advance, you could give us a brief description of what the code is supposed to do.

Please delete this...I'm new to the new Daniweb format.

Really and we're just supposed to know what this does.

If I understand this you have the hard part all figured out. Just prompt for the numbers in your for loop and add them up and the divide by the total

Well the first thing you'll have to do is determine page size on your computer. Then you could try something like below. [code] #include <stdio.h> #include <stdlib.h> #define MY_PAGE_SIZE 4096 int main(int argc, char** argv) { unsigned long addr = (unsigned long)&main & ((0UL - 1UL) ^ (MY_PAGE_SIZE - 1)); …

The error message tells it all. The case needs to be a constant...Like 1,2,3,4,5...or [code] #define one 1 const unsigned long two 2; switch(angle) { case:1 {} case:two {} } [/code]

Well 9 divides into 1 zero times with 1 left over.

Wow I won't be forking a process that's already sporting an extra thread(the event loop).

Just use [code] struct mys {}; struct mys * pointer = (struct mys*)malloc(num_elements * sizeof(struct mys)); [/code]

Because goto can have devastating results on your program and program flow its frowned on. If you really need to jump all over your program try a safe function like longjmp(). [code] void longjmp (jmp_buf env, int val); int setjmp ( jmp_buf env ); [/code]

It really depends on your extraction criteria but I would start investigating functions like strtok().

Isn't Cygwin a Windows compiler and termios.h a Linux/Unix header?

Have you tried using a library like [url]http://gmplib.org/[/url]

Your kidding right? Demanding free help.

It doesn't make sense to pass memory pointers between address spaces.

Try defining your function like so: [code] void initFoo(foo **tmp) { ... *tmp = malloc(sizeof(foo) * 5); ... } [/code] and pass the pointer like so [code] foo *bar = NULL; /* want to create an array of 5 */ initFoo(&bar); [/code]

Sure we'll help. What's your question or problem? Well besides its not working.

Wow what compiler are you using - #include <iostream.h>

[QUOTE=Jimmeny;1771865]borland c++ is fastest[/QUOTE] Why do people keep reviving these old threads?

You could use the static keyword but I would create the array on the heap. [code] int* Bar(){ int * array = new int[2]; array[0] = 1; array[1] = 2; return array; } [/code] Just remember that you have to track and maybe delete [] this array.

Yeah, I need a million cdn dollars maybe we can work out a deal.

I tried this and my compiler didn't complain. [code] #include <iostream> #include <vector> #include <string> using namespace std; class GameUnit { public: string GetName() {return Name;} protected: string Name; }; class Player { public: void ListUnits(); protected: vector<GameUnit*> MyUnits; }; void Player::ListUnits() { for(unsigned int i=0; i<MyUnits.size(); i++) { cout<<MyUnits[i]->GetName()<<"\n"; …

[QUOTE=resat.1907;1769791]Integer size is generally 4 bytes however char is only 1 byte your error is caused by thisissue in my opinion[/QUOTE] You realize this thread is 8 years old.

Are you opening this port as a privileged user?

Is it possible to pass a map container to the copy algorithm and display it to the std::cout? If so how? What I tried below doesn't work but it looks like it should. Any comments or pointers will be appreciated. [code] #include <iostream> #include <string> #include <map> #include <algorithm> #include …

You might want to put 'system("pause")' before return 0.

Yes, I'm surprised your compiler allowed it. The assignment operator must return a reference to the object.

try [code] #include <cstdio> int ca; ca = fgetc(stdin); [/code]

try [code] std::vector<Rab> items; [/code]

So whats' the problem?

[QUOTE=rithish;1767955][CODE]#include<stdio.h> struct rec { int i; float PI; char A; }; int main() { struct rec *ptr_one; ptr_one =(struct rec *) malloc (sizeof(struct rec)); ptr_one->i = 10; ptr_one->PI = 3.14; ptr_one->A = 'a'; printf("First value: %d\n", ptr_one->i); printf("Second value: %f\n", ptr_one->PI); printf("Third value: %c\n", ptr_one->A); free(ptr_one); return 0; } [/CODE] …

Sounds like your using unsigned characters for one and signed characters for the other.

Maybe you could elaborate on 'this code doesn't execute'.

Look up arbitrary precision arithmetic libraries like [url]http://gmplib.org/[/url]

start_routine is the entrance point of the thread create with pthread_create.

All through this program...What's the value of r?

[quote] When I try to this, it will only print the first character of the particle name... [/quote] That's because your scanning a character [code] sscanf(line.c_str(), "%c %c %f %f %f %f %f", &(current_step.m_plus), &(current_step.m_particle), &(current_step.m_energy_sec), &(current_step.m_xpos_sec), &(current_step.m_ypos_sec), &(current_step.m_zpos_sec)); [/code] In you format string the second specifier is %c which …