How to read the return code from a child process

I use fork and execv to execute a child process. In the parent program, I have this:

int status;
wait(&status);
cout << "return code = " << status << endl;

Will that wait for the child process to terminate and then display开发者_如何学JAVA it's return code?

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You should use waitpid() if want to get status of specified child process. wait() will return status of first finished child process.

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yes, it should from what i read http://linux.die.net/man/2/wait