摘要： #include<stdio.h>#include<sys/stat.h>#include<sys/types.h>#include<fcntl.h>#include<errno.h>#define BUFFER_SIZE 1024int main(int argc, char **argv){ int from_fd, to_fd; int read_bytes, write_bytes; char buffer[BUFFER_SIZE]; char *ptr; if(argc != 3) { fprintf(stde... 阅读全文