Question

linux 从串口读取数据时出现Segmentation fault

while(1)
{ memset(buff,0,64);
if((count=read(fd,buff,64))>0)
{ for(i=0;i<count;i++)
printf("the received words are :%s",buff[i]);
}
}

Answer 1

printf("the received words are :%s",buff[i]);
这句不对，buff[i]为一个字符或者是整数，与%s匹配，会造成访问地址为buff[i]的内存，致使发生段错误，改为：
printf("the received words are :%c",buff[i]); 或者：
printf("the received words are :%s",&buff[i]);