critical_section.cpp

#include "omp.h"
#include <iostream>
#include <cmath>
#include <cstdlib>
#include <string>
#include "stdio.h"

#define SIZE 10

/**  
 * Critical sections are OpenMP constructs we use to prevent multiple threads from accessing 
 * the critical section's code at the same time. In simpler words, a critical section specifies 
 * code which is to be executed by only one thread at a time.
 */

/**
 * @brief A function that generates a random array of SIZE 10 and returns the biggest number in that array
 * @note Makes use of OpenMP
 */
int main()
{
    int i, max, a[SIZE];

    for(i=0; i<SIZE; i++)
    {
        a[i] = rand();
        std::cout<<a[i]<<std::endl;
    }

    max = a[0];
    
    /**
     * @TODO: Find the biggest number in the array 'a' by utilising OpenMP  
     * @note Use 2 directives 
     * -> the first should assign 4 threads to run at the same time
     * -> the second one should use the OMP critical statement (applicable only when avoiding Race Conditions)
     */

    std::cout<<"Max ="<<max<<std::endl;

    return 0;
}