chap17.lst

Borland C++ Builder The Complete Reference 例程源代码

listing 1
#include <process.h> 
#include <conio.h> 
 
int main(void) 
{ 
  for(;;) 
    if(getch()=='A') abort(); 
 
  return 0; 
}

listing 2
#include <stdio.h> 
#include <stdlib.h> 
 
/* Example using atexit(). */ 
int main(void) 
{ 
  void done(); 
 
  if(atexit(done)) printf("Error in atexit()."); 
 
  return 0; 
} 
 
void done() 
{ 
  printf("Hello there!"); 
}

listing 3
#include <stdio.h> 
#include <stddef.h> 
#include <process.h> 
#include <conio.h> 
 
void ThreadToRun(void *); 
 
int main(void) 
{ 
  int i; 
  unsigned long thread; 
 
  for(i = 1; i < 10; i++) 
  { 
    thread = _beginthread(ThreadToRun, 4096, (void *)i); 
    if((long)thread == -1) 
    { 
       printf("Error creating thread number %d\n", i); 
       exit(1); 
    } 
    printf("Thread %d created with an ID of %uld.\n", i, thread); 
  } 
 
  printf("Press any key to exit...\n"); 
  getch(); 
 
  return 0; 
} 
 
void ThreadToRun(void *num) 
{ 
  printf("Running thread %d with an ID of %ld\n", 
         (int)num, _threadid); 
  _endthread(); 
}

listing 4
_cexit();

listing 5
/* First file - parent */ 
 
#include <stdio.h> 
#include <process.h> 
#include <stdlib.h> 
 
int main(void) 
{ 
  execl("test.exe", "test.exe", "hello", "10", NULL); 
 
  return 0; 
} 
 
 
/* Second file - child */ 
#include <stdio.h> 
#include <stdlib.h> 
 
int main(int argc, char *argv[]) 
{ 
  printf("This program is executed with these command line "); 
  printf("arguments: "); 
  printf(argv[1]); 
  printf(" %d", atoi(argv[2])); 
  return 0; 
}

listing 6
char menu(void) 
{ 
  char ch; 
 
  do { 
    printf("Enter names (E)"); 
    printf("Delete name (D)"); 
    printf("Print (P)"); 
    printf("Quit (Q)"); 
  } while(!strchr("EDPQ", toupper(ch))); 
  if(ch=='Q') exit(0); 
  return ch; 
}

listing 7
#include <stdio.h> 
#include <process.h> 
#include <conio.h> 
 
int main() 
{ 
   printf("This program PID = %d\n", getpid()); 
 
   return 0; 
}

listing 8
/* Parent process */ 
#include <stdio.h> 
#include <process.h> 
 
int main(void) 
{ 
  printf("In parent\n"); 
  spawnl(P_WAIT, "test.exe", "test.exe", "hello", "10", NULL); 
  printf("In parent\n"); 
 
  return 0; 
} 
 

 
/* First child */ 
#include <stdio.h> 
#include <stdlib.h> 
#include <process.h> 
 
int main(int argc, char *argv[]) 
{ 
  printf("First child process executing "); 
  printf("with these command line arguments: "); 
  printf(argv[1]); 
  printf(" %d\n", atoi(argv[2])); 
  spawnl(P_WAIT, "test2.exe", "test2.exe", NULL); 
  printf("In first child process.\n"); 
  return 0; 
} 
 
 
/* Second child */ 
#include <stdio.h> 
int main(void) 
{ 
  printf("In second child process.\n"); 
  return 0; 
}