task2

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<Windows.h>
#include<process.h>

HANDLE EventA, EventB, EventC;


unsigned int _stdcall Print_a(void* pPM) {
    char id = *(char*)pPM;
    for (int i = 0; i < 10; i++) {
        WaitForSingleObject(EventA, INFINITE);
        printf("%c", id);
        SetEvent(EventB);
    }
}

unsigned int _stdcall Print_b(void* pPM) {
    char id = *(char*)pPM;
    for (int i = 0; i < 10; i++) {
        WaitForSingleObject(EventB, INFINITE);
        printf("%c", id);
        SetEvent(EventC);
    }
}

unsigned int _stdcall Print_c(void* pPM) {
    char id = *(char*)pPM;
    for (int i = 0; i < 10; i++) {
        WaitForSingleObject(EventC, INFINITE);
        printf("%c", id);
        SetEvent(EventA);
    }
}

void main() {

    EventA = CreateEvent(NULL, FALSE, TRUE, NULL);
    EventB = CreateEvent(NULL, FALSE, FALSE, NULL);
    EventC = CreateEvent(NULL, FALSE, FALSE, NULL);

    char A = 'A', B = 'B', C = 'C';
    HANDLE a, b, c;
        a = _beginthreadex(NULL, 0, Print_a, &A, 0, NULL);
        b = _beginthreadex(NULL, 0, Print_b, &B, 0, NULL);
        c = _beginthreadex(NULL, 0, Print_c, &C, 0, NULL);

    WaitForSingleObject(a, INFINITE);
    WaitForSingleObject(b, INFINITE);
    WaitForSingleObject(c, INFINITE);
    CloseHandle(EventA);
    CloseHandle(EventB);
    CloseHandle(EventC);
    CloseHandle(a);
    CloseHandle(b);
    CloseHandle(c);
}
}