I was trying to create a function in C which would let me pass a character as its argument when using the CreateThread function.
It works for the most part, the thread is created and prints a character. The problem is, it many of the threads don’t print the character they are supposed to print, and instead print the last one. I assume it has something to do with how the character is passed on to the function, or perhaps the synchronization.
Here is the code:

#define LETTERS "abcdefghij"

DWORD WINAPI threadFunc(LPVOID param) {
    HANDLE sem = OpenSemaphore(SEMAPHORE_ALL_ACCESS, TRUE, (LPCWSTR)"sem");
    PCHAR name;
    name= (PCHAR)param;
    printf("I'm a thread: %cn", *name);
    fflush(stdout);
    ReleaseSemaphore(sem, 1, NULL);
    return 1;
}
int main()
{
    DWORD(*f)(LPVOID);
    f = threadFunc;

    HANDLE sem = CreateSemaphore(NULL, 0, 10, (LPCWSTR)"sem");

    int i;
    DWORD name;
    CHAR nameOfThread;
    for (i = 0;i < 10;i++) {
        nameOfThread= LETTERS[i];
        CreateThread(NULL, 0, f, &nameOfThread, 0, &name);
    }

    for (i = 0;i < 10;i++) {
        WaitForSingleObject(sem, INFINITE);
    }
    printf("I'm the processn");
} 

And here are the results of executing it:

I'm a thread: g
I'm a thread: h
I'm a thread: j
I'm a thread: j
I'm a thread: j
I'm a thread: j
I'm a thread: j
I'm a thread: j
I'm a thread: j
I'm a thread: j
I'm the process

Any help would be appreciated.