linux 中多线程的问题???????

newroot

Post by haohao_h
The system() function causes string to be given to the shell
     as input, as if string had been typed as a command at a ter-
     minal. The invoker waits until the shell has completed, then
     returns the exit status of the shell in the format specified
     by waitpid(2).

按道理说，它只应该阻塞所在线程，而不会让正在运行 的主进程阻塞!!