(mtk)请问这个语句是什么意思?

yyy-hq

在PopulateResData函数里,
{
char cmd[512];

system(cmd);  //这个是什么函数?怎么没有定义?
}

young

这个是标准库文件中的函数
VC++的头文件STDLIB.H中这样申明
#ifndef _MAC
_CRTIMP int    __cdecl system(const char *);
#endif

ADS的stdlib.h中这样申明
extern int  system(const char * /*string*/);
   /*
    * passes the string pointed to by string to the host environment to be
    * executed by a command processor in an implementation-defined manner.
    * A null pointer may be used for string, to inquire whether a command
    * processor exists.
    *
    * Returns: If the argument is a null pointer, the system function returns
    *          non-zero only if a command processor is available. If the
    *          argument is not a null pointer, the system function returns an
    *          implementation-defined value.
    */

tritium

调用系统命令