_cexit
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Header File
process.h
Category
Process Control Routines
Prototype
void _cexit(void);
Description
Performs exit cleanup without terminating the program.
_cexit performs the same cleanup as exit, closing all files but without terminating the calling process. The _cexit function calls any registered "exit functions" (posted with atexit). Before _cexit returns, it flushes all input/output buffers and closes all streams that were open.
Return Value
None.
Example
#include <windows.h> #include <process.h> #include <io.h> #include <fcntl.h> #include <stdio.h> #include <stdlib.h> void exit_func(void) { printf("Exit function called\n\n"); printf("Close Window to return to program... It will beep if able to read from file"); } int main(void) { int fd; char c; if ((fd = open("_cexit.c",O_RDONLY)) < 0) { printf("Unable to open _cexit.c for reading\n"); return 1; } atexit(exit_func); if (read(fd,&c,1) != 1) printf("Unable to read from open file handle %d before _cexit\n",fd); else printf("Successfully read from open file handle %d before _cexit\n",fd); _cexit(); if (read(fd,&c,1) == 1) MessageBeep(0); return 0; }
Portability
| POSIX | Win32 | ANSI C | ANSI C++ |
|---|---|---|---|
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