Lab-4 - Fibonacci using multithreding.c

#include <pthread.h>
#include <stdio.h>
int goal = 0;
long fib[500];
void *runner(void *param)
{
    if (goal <= 0)
        pthread_exit(0);
    fib[0] = 0;
    if (goal > 1)
    {
        fib[1] = 1;
        for (int i = 2; i < goal; i++)
            fib[i] = fib[i-1] + fib[i-2];
        
    }
    pthread_exit(0);
}
int main(int argc, char *argv[])
{
    pthread_t tid;
    pthread_attr_t attr;
    pthread_attr_init(&attr);
    printf("Print this many Fibonacci numbers: ");
    scanf("%d", &goal);
    if (goal > 500)
    {
        printf("Printing as many as possible: 500\n");
        goal = 500;
    }
    pthread_create(&tid, &attr, runner, argv[1]);
    pthread_join(tid, NULL);
    if (goal > 0)
        printf("%ld", fib[0]);
    for (int i = 1; i < goal; i++)
        printf(", %ld", fib[i]);
    printf("\n");
    return 0;
}




#include <stdio.h> 
#include <sys/types.h> 
#include <unistd.h> 
void forkexample() 
{ 
    if (fork() == 0) 
        printf("Hello from Child!\n"); 
 
    else
        printf("Hello from Parent!\n"); 
} 
int main() 
{ 
    forkexample(); 
    return 0; 
}