?? cmd2.c
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#include "apue.h"#include <setjmp.h>#define TOK_ADD 5jmp_buf jmpbuffer;intmain(void){ char line[MAXLINE]; if (setjmp(jmpbuffer) != 0) printf("error"); while (fgets(line, MAXLINE, stdin) != NULL) do_line(line); exit(0);} . . .voidcmd_add(void){ int token; token = get_token(); if (token < 0) /* an error has occurred */ longjmp(jmpbuffer, 1); /* rest of processing for this command */}?? 快捷鍵說明
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