thread-uri_din_lab

#include<stdlib.h>
#include<stdio.h>
#include <time.h>
int main()
{
	FILE *f= fopen("info.txt","w");
	srand (time(NULL));
	int i;
	fprintf(f,"%d\n",100);
	for(i=0; i<100; i++){
		fprintf(f,"%d\n", rand()%100);
		}
	return 0;
}



----------------------

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

int nr_total = 0, med = 0;
int v[101],i = 0;

void *functie (void *threadid){

	int k=0,k1=0,sum=0;
	long media=0;
	//long id = *((long *)threadid);
	long id = (long)threadid;
	//printf("id= %ld\n",id);
	if (id == 1)
	{
		k=0;
		k1=med;
	}
	else if(id == 2)
	{
		k=med+1;
		k1=2*med+1;
	}
	else if (id == 3)
	{	k = 2*med+1;
		k1=nr_total;
	}
	for(i=k; i<=k1; i++){
		//printf("i=%d ; k=%d ; k1=%d ; v[i]=%d \n",i,k,k1,v[i]);
		sum+=v[i];}
	media=sum/(k1+1);
	//printf("Media este:%d\n",media);
	pthread_exit((void*)media);
}
int main(int arg, char *argv[])
{

	long suma=0,m=0;
	long id;
	pthread_t thread[4];

	FILE *f = fopen(argv[1],"r");
	fscanf(f,"%d",&nr_total);

	med=(int)nr_total/3;

	for(i=0; i<nr_total; i++)
		fscanf(f,"%d",&v[i]);
	for(id=1; id<=3; id++){
		int rc = pthread_create(&thread[id], NULL, functie, (void*)id);
		if(rc){
			printf("Error!\n");
			exit(1);}
	}
	for(i=1;i<=3;i++){
		void *status;
		pthread_join(thread[i],&status);
		suma+=(long)status;
	}
	m=suma/3;
	printf("MEDIA = %ld\n",m);
	return 0;
}