Pthreads in C. Simple example doesn’t work [closed]

by

This line 

printf("(%s)",'Hi. It's thread number 1');

should be

printf("(%s)", "Hi. It's thread number 1");

String literals are enclosed using quotation marks ".

Also passing 1 to pthread_join() as 2nd parameter most likley invokes undefined behaviour, as it tells the function to write a value of type void * to address 1, which is not expected to be pointing to valid memory.

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