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system

Usage

   #include <stdlib.h>
   int system(const char *string);

   ANSI

Description

   system causes string to be passed to the operating system command
   processor as if the string had been typed in at the console. The current
   program waits until the command is executed then resumes.

   There is no way to determine the exit status of programs run using
   system.Use one of the spawn functions if an exit status is required.

   System cannot be used to set environment variables.

Example 

   #include <stdlib.h>

   int main()
   {
       system("set >>path.log");
       system("cat path.log");
       system("rm path.log");

       system("ls /w");
       return EXIT_SUCCESS;
   }

Return Value

   If there was not enough available memory to execute the process,
   then -1 is returned, else a 0 is returned.

See Also

   exec, spawn