c和c++完美演绎,里面有编程的方法,对编程技术的提高有很大的帮助

				/* 范例：9-24 */
				#include 
				#include 
				#include 
				#include 
				void main(int argc,char *argv[])
				{
				  int file1,file2;
				  char buf[512];
				  if((file1 = open(argv[1],O_RDONLY))==-1)
				  {
				    printf("Read file %s Error!\n",argv[1]);
				    exit(1);
				  }
				  if((file2 = open(argv[2], O_WRONLY|O_CREAT))==-1)
				  {
				    printf("Create file %s Error!\n",argv[2]);
				    exit(1);
				  }
				  while(read(file1,buf,512)>0)
				    write(file2,buf,512);
				
				  close(file1);
				  close(file2);
				}
				
				程序执行结果：
				D:\TC>p9-24 xx.txt out.txt