How can I use OpenMP in C for parallel programming?

How can I use OpenMP in C for parallel programming?

You can use OpenMP by including the header <omp.h> and using pragmas like #pragma omp parallel to parallelize your code.

Can you give me a simple example of using OpenMP?

Sure! Here's a basic example:

#include <omp.h>
#include <stdio.h>

int main() {
    #pragma omp parallel
    {
        printf("Hello from thread %d\n", omp_get_thread_num());
    }
    return 0;
}

What are some common pitfalls when using OpenMP?

Common pitfalls include race conditions, improper use of shared variables, and not setting the number of threads correctly.

How do I set the number of threads in OpenMP?

You can set the number of threads using the omp_set_num_threads() function or by setting the OMP_NUM_THREADS environment variable.