I make programs in C. I read about the strdup() function. From what I could tell, the strdup() function allocates space while the strcpy() does not. But the problem with strdup() is it allocates space but does not free it. strdupa() allocates and…
I'm using Bison & Flex for 1 month more or less, so I'm sorry if I don't see something obvious (but I don't think it is).
I have a problem about freeing memory with Flex Bison. Here is what my code looks like:
parser.l
{DATE} { yylval.str=…
I am reading "Operating System: Three Easy Pieces". In chapter 5, there is a piece of code that show the usage of exec() system call.
1 #include "common.h"
2
3 int main(int argc, char ** argv) {
4 printf("hello world (pid:…
Why after using strdup(value) (int)value returns you different output than before?
How to get the same output?
My short example went bad, please use the long one:
Here the full code for tests:
#include
#include
int main()
{
…
I've been given some starter code for a project I have to complete in a class I'm taking. The code compiles fine on the university computers however when I try to compile the code on my own computer I get errors due the function call strdup. From…
I'm using with a smaller piece of code to test functionality for a larger (beginner) program, but I don't understand the difference between two strings.
I found and used:
#include
#include
int main()
{
char *string,…
gcc 4.5.1 c89
I am trying to free some memory. However, when I check with valgrind the memory hasn't been freed. I am wondering what I am doing wrong.
I have the following structure:
typedef struct tag_cand_results {
char…
I am creating an array of filenames obtained from a linux_dirent structure (d).
At each iteration of a loop a filename is obtained using
d_entry = strdup(d->d_name);
and a pointer to this is added to the array:
srcList[aSz] = d_entry;
As the array…
I couldn't think of a proper title to my question so here it goes. I am trying to learn C and the following code is from the tutorial I am following.
struct Person {
char *name;
int age;
int height;
int weight;
};
struct Person…
How would I free the memory allocated by strdup?
I've tried using free(linepos) at the end of this function, but that causes my program to fail. I don't have linepos outside of this function, so I'm unable to free it anywhere else. Thank you in…
I've written this C code. In the beginning, I used file handing to read a text file and insert every line as a string in a linked list. I need to free all cases of memory allocation in the program in a separate void function. How do I do that? I…
I have this line of code:
strKey &= Strings.StrDup(intKeySize - intLength, chrKeyFill)
What is the equivalent of this code in C#? I can't seem to find it.
Although I know that converting const char * to char * is almost banned in C/C++ because of many problems, I am caught up in a situation where I think I have to convert const char * to char *.
I get a string from a text file as string by using c_str…
