#include <stdio.h>
#include <pthread.h>
 
void* factorial(void* arg) {
    int n = *(int*)arg;
    long long fact = 1;
 
    for(int i = 1; i <= n; i++) {
        fact *= i;
    }
 
    printf("Factorial of %d = %lld\n", n, fact);
    return NULL;
}
 
int main() {
    pthread_t thread;
    int number;
 
    printf("Enter a number: ");
    scanf("%d", &number);
 
    pthread_create(&thread, NULL, factorial, &number);
    pthread_join(thread, NULL);
 
    return 0;
}

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