minmaxavg.c

#include<pthread.h> 
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int max, min, l;
float avg;
int list[10];
void *Max(void *param);
void *Min(void *param);
void *Avg(void *param);
int main(int argc, char *argv[]) { 
  pthread_t tid1, tid2, tid3;
  pthread_attr_t attr1, attr2, attr3;
  if (argc < 2) { 
    fprintf(stderr,"Usage: Enter list of integer values\n"); 
    return -1; 
  }
  for(int i = 1; i < argc; i++)
    list[i-1] = atoi(argv[i]);
  l = argc - 1;
  pthread_attr_init(&attr1);
  pthread_attr_init(&attr2);
  pthread_attr_init(&attr3); 
  pthread_create(&tid1,&attr1,Max, list);
  pthread_create(&tid2,&attr2,Min, list);
  pthread_create(&tid3,&attr3,Avg, list);
  pthread_join(tid1,NULL);
  pthread_join(tid2,NULL);
  pthread_join(tid3,NULL); 
  printf("Max, Min, Avg: %d, %d, %f\n",max,min,avg);
} 
void *Max(void *param){ 
  max = list[0];
  for(int i = 1; i < l; i++)
    if(max < list[i])
      max = list[i];
  pthread_exit(0);
}
void *Min(void *param){ 
  min = list[0];
  for(int i = 1; i < l; i++)
    if(min > list[i])
      min = list[i];
  pthread_exit(0);
} 
void *Avg(void *param){
  avg = 0;
  for(int i = 0; i < l; i++)
    avg += list[i];
  avg /= l;
  pthread_exit(0); 
}