How to initialize a pointer to a struct in C?

Question

Given this struct:

struct PipeShm
{
    int init;
    int flag;
    sem_t *mutex;
    char * ptr1;
    char * ptr2;
    int status1;
    int status2;
    in         


        

Answer 1

First you need to allocate memory for the pointer as below:

myPipe = malloc(sizeof(struct PipeShm));

Then, you should assign values one by one as below:

myPipe->init = 0;
myPipe->flag = FALSE;
....

Please note that for each individual pointer inside the structure, you need allocate memory seperately.