Compiling codes with C++11

$ c++ -pthread -std=c++11 -o thread_hello_mutex.exe thread_hello_mutex.cpp
$ ./thread_hello_mutex.exe
Critical: Hello from thread 1
Critical: Hello from thread 0
Critical: Hello from thread 9
Critical: Hello from thread 3
Critical: Hello from thread 4
Critical: Hello from thread 5
Critical: Hello from thread 6
Critical: Hello from thread 7
Critical: Hello from thread 8
Critical: Hello from thread 2
$