#include <iostream>
#include <stdio.h>using namespace std;
void my_copy(const char* src_file, const char* dest_file){ FILE *in_file, *out_file; in_file = fopen(src_file, "rb"); if (in_file == NULL) { throw 1; }out_file = fopen(dest_file, "wb");
if (out_file == NULL) { throw 2; }char rec[1024];
size_t bytes_in, bytes_out; while ((bytes_in = fread(rec, 1, 1024, in_file))>0) { bytes_out = fwrite(rec, 1, bytes_in, out_file); if (bytes_in != bytes_out) { throw 3; } } fflush(out_file); fclose(out_file); fclose(in_file);}
int main()
{ try { my_copy("D:\\File\\1.txt", "D:\\File\\20190608\\1.txt"); } catch (int e) { switch (e) { case 1: printf("打开源文件出错\n"); break; case 2: printf("打开目标文件出错\n"); break; case 3: printf("拷贝文件出错\n"); break; default: printf("未知错误\n"); break; } }
system("pause");
return 0;}