?? sig2.c
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/********** *sig2.c * **********/#include <stdio.h>#include <stdlib.h>#include <sys/types.h>#include <signal.h>#include <unistd.h>#include <errno.h>#define PROMPT "Do U want to terminate program?"char *prompt=PROMPT;void ctrl_c_op(int signo){char c;write(STDERR_FILENO,prompt,strlen(prompt));if((c=getchar())=='y') exit(0);}int main(){ struct sigaction act; act.sa_handler=ctrl_c_op; sigemptyset(&act.sa_mask); act.sa_flags=0; if(sigaction(SIGINT,&act,NULL)<0) { fprintf(stderr,"Install Signal Action Error:%s\n\a",strerror(errno)); exit(1); } while(1);} ?? 快捷鍵說明
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