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//Assignment-02: Threading Tasks
//Task01
#include <stdio.h> #include <stdlib.h> 
#include <pthread.h> #include <unistd.h>
Write a c program that creates 5 threads and prints which thread is running and after the thread is closed, a new thread starts its execution. Each thread should run sequentially one by one.
#define NUM_THREADS 5
// Thread function
void* thread_func(void* arg) {
    int thread_num = *((int*) arg);
    printf("thread-%d running\n", thread_num);
    printf("thread-%d closed\n", thread_num);
    return NULL;
}
// Main function
int main() {
    pthread_t threads[NUM_THREADS];
    int thread_nums[NUM_THREADS];

    for (int i = 0; i < NUM_THREADS; i++) {
        thread_nums[i] = i + 1;
        pthread_create(&threads[i], NULL, thread_func, (void*) &thread_nums[i]);
        pthread_join(threads[i], NULL);
    }

    return 0;
}
//Task02
Write a program in c using 5 threads where each thread will print 5 integers
The outputs will look like this:
Thread 1: 1 2 3 4 5
Thread 2: 6 7 8 9 10
Thread 3: 11 12 13 14 15
Thread 4: 16 17 18 19 20
Thread 5: 21 22 23 24 25
void *thread_function(void *arg)
{
    int *id = (int *)arg;
    for (int i = 0; i < 5; i++)
    {
        if (*id == 1) {
            printf("Thread %d prints %d\n", *id, i + 1);
        } else if (*id == 2 {
            printf("Thread %d prints %d\n", *id, i + 6);
        } else if (*id == 3) {
            printf("Thread %d prints %d\n", *id, i + 11);
        } else if (*id == 4) {
            printf("Thread %d prints %d\n", *id, i + 16);
        } else if (*id == 5) {
            printf("Thread %d prints %d\n", *id, i + 21);
        }
    }
    pthread_exit(NULL);
}
int main()
{
    pthread_t thread_id[5];
    int i;
    int *id;
    for (i = 0; i < 5; i++) {
        id = (int *)malloc(sizeof(int));
        *id = i + 1;
        pthread_create(&thread_id[i], NULL, thread_function, id);
        pthread_join(thread_id[i], NULL);
    }
    return 0;
}
//Task03
Write a program in c that has a function that takes the name of the user and adds all the ASCII value of the characters and returns it. Now create 3 threads that run the function using 3 different user names. Now print “Youreka” if all the returned values are equal, print “Miracle” if any 2 returned values are equal and print “Hasta la vista” if the values don’t match using another thread.
// function to add all the ASCII values of the characters
void *count_ascii(void *arg)
{
    char *name = (char *)arg;
    int i = 0, sum = 0;
    int *result = (int *)malloc(sizeof(int));
    while (name[i] != '\0') {
        sum += name[i];
        // printf("%c", name[i]);
        // printf("%d", sum);
        i++;
    }
    // prinnf("%s: %d\n", name, sum);
    *result = sum;
    return result;
}
int main()
{
    pthread_t t1, t2, t3;
    char *name1 = "Iftekhar";
    char *name2 = "Hossain";
    char *name3 = "Turja";
    int *result1, *result2, *result3;

    // create 3 threads to run the function
    pthread_create(&t1, NULL, count_ascii, (void *)name1);
    pthread_join(t1, (void **)&result1);
    pthread_create(&t2, NULL, count_ascii, (void *)name2);
    pthread_join(t2, (void **)&result2);
    pthread_create(&t3, NULL, count_ascii, (void *)name3);
    pthread_join(t3, (void **)&result3);

    // compare the results and print the appropriate message
    if (*result1 == *result2 && *result1 == *result3)  {
        printf("Youreka\n");
    } else if (*result1 == *result2 || *result1 == *result3 || *result2 == *result3) {
        printf("Miracle\n");
    } else {
        printf("Hasta la vista\n");
    }
    return 0;
}