基于sigaction编写一个信号处理程序,按下CTRL+C,打印奇数随机数,按下CTRL+\,打印偶数随机数,提交代码和运行结果截图。
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include<time.h>
#include<stdlib.h>
#define INPUTLEN 100
int main(int argc, char *argv[])
{
void inthandler(int);
void quithandler(int);
char input[INPUTLEN];
int nchars;
signal(SIGINT, inthandler);//^C
signal(SIGQUIT, quithandler);//^\
do {
nchars = read(0, input, (INPUTLEN - 1));
if (nchars == -1)
perror("read returned an error");
}
while (strncmp(input, "quit", 4) != 0);
return 0;
}
void inthandler(int s)
{
srand((unsigned int)time(NULL));
printf("奇数随机数为:%d\n",rand()*2+1);
}
void quithandler(int s)
{
srand((unsigned int)time(NULL));
printf("偶数随机数为:%d\n",rand()*2);
}