CONVERT TO C++

NEED ASAP PLEASE

#include

#include

#include

int arr[1000];

int size;

// thread to calculate average

void *calculate_avg(){

int sum = 0, i;

float average = 0;

for(i=0; i < size; i++){

sum += arr[i];

}

average = sum / size;

printf("The average value is %f ", average);

}

// thread to calculate minimum

void calculate_min(){

int i, minimum = 999999999;

for(i=0; i < size; i++){

if(minimum > arr[i]){

minimum = arr[i];

}

}

printf("The minimum value is %d ", minimum);

}

// thread to calculate maximum

void *calculate_max(){

int i, maximum = -999999999;

for(i=0; i < size; i++){

if(maximum < arr[i]){

maximum = arr[i];

}

}

printf("The maximum value is %d ", maximum);

}

// the main function

void main(int argc, char *argv[]){

if(argc <= 1){

printf("Please enter at least one argument through command line ");

printf("Exitting . . . ");

exit(1);

}

pthread_t avg_thread;

pthread_t max_thread;

pthread_t min_thread;

int i;

size = argc - 1;

// read the values from command line convert them to integer

// values and insert into array

for(i=1; i <= size; i++){

arr[i-1] = atoi(argv[i]);

}

// create three threads

pthread_create(&avg_thread, NULL, (void *)calculate_avg, NULL);

pthread_create(&min_thread, NULL, (void *)calculate_min, NULL);

pthread_create(&max_thread, NULL, (void *)calculate_max, NULL);

// wait for completion of each of the threads.

pthread_join(avg_thread, NULL);

pthread_join(min_thread, NULL);

pthread_join(max_thread, NULL);

}