codigo_control_3.c

codigo_control_3.c

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>

#define MAX_THREADS 5

int i, sum;
enum {THREAD_FAIL, THREAD_SUCCESS}; 

void *runner(void *param){ 
	int limit = atoi(param); 
	int i, check; 
	sum=0; check=0; 
	if (limit > 0){
		for (i = 1; i <= limit; i++){
			sum += i; 
			check += i; 
		}
	}
	if (check == sum) pthread_exit((void *) THREAD_SUCCESS); 
	else pthread_exit((void *) THREAD_FAIL); 
} 

char* statusToString (int status){ 
	return status == THREAD_SUCCESS ? "success!":"fail"; 
} 

int main(int argc, char *argv[]) {
	pthread_t threads[MAX_THREADS]; 
	int status; 
	for (i=0;i<MAX_THREADS;i++) 
		pthread_create(&threads[i], NULL, (void*)runner, (void *) argv[1]); 
	for (i=0;i<MAX_THREADS;i++){ 
		pthread_join(threads[i], (void **)&status); 
		printf("sum = %d, status = %s\n", sum, statusToString(status)); 
	}
	return 0; 
}