对拍程序

借鉴sandy老哥的对拍程序

https://www.cnblogs.com/sandychn/p/10355239.html

 1 #include <cstdio>
 2 #include <cstring>
 3 #include <cstdlib>
 4 #include <cerrno>
 5 #include <ctime>
 6 
 7 // 设置区
 8 namespace Settings {
 9     const int MAX_LEN = 20; // 当发现错误时,显示错误行数据的最大长度
10     const int CASE_CNT = 100; // 对拍测试次数
11     const int BUFFER_SIZE = 1 << 10; // 每行的缓冲区大小
12     const char *const userFile = "1.cpp"; // 需要测试的源代码文件名(相对路径)
13     const char *const stdFile = "2.cpp"; // 标准答案的源代码文件名(相对路径)
14     const char *const dataFile = "3.cpp"; // 随机生成数据的源代码文件名(相对路径)
15 }
16 
17 using namespace Settings;
18 using namespace std;
19 char cmd[BUFFER_SIZE], info[BUFFER_SIZE * 3];
20 char buf1[BUFFER_SIZE], buf2[BUFFER_SIZE];
21 
22 template <typename ...T>
23 int run(const char *str, T ...args) {
24     sprintf(cmd, str, args...);
25     return system(cmd);
26 }
27 
28 bool fileCompare(const char *stdOutput, const char *userOutput) {
29     FILE *fp_std = fopen(stdOutput, "r"), *fp_user = fopen(userOutput, "r");
30     if (fp_std == nullptr || fp_user == nullptr) {
31         sprintf(info, "Open file failed: %s\n", strerror(errno));
32         return false;
33     }
34     bool flag = false;
35     for (int i = 1; !feof(fp_std) && !feof(fp_user); ++i) {
36         char *p1 = fgets(buf1, BUFFER_SIZE, fp_std);
37         char *p2 = fgets(buf2, BUFFER_SIZE, fp_user);
38         if (p1 == nullptr && p2 == nullptr) {
39             flag = true;
40             break;
41         } else if (!p1 || !p2 || strcmp(p1, p2)) {
42             sprintf(info,
43                     "Difference found in line %d:\n  std: %.*s user: %.*s",
44                     i, MAX_LEN, p1 ? p1 : "(EOF Detected)\n",
45                     MAX_LEN, p2 ? p2 : "(EOF Detected)\n");
46             break;
47         }
48     }
49     fclose(fp_std), fclose(fp_user);
50     return flag;
51 }
52 
53 int main() {
54     printf("Compiling... ");
55     run("g++ %s -o user.exe", userFile);
56     run("g++ %s -o std.exe", stdFile);
57     run("g++ %s -o data.exe", dataFile);
58     printf("Finished.\n");
59     clock_t st, ed;
60     for (int i = 1; i <= CASE_CNT; ++i) {
61         printf("Case %03d: ", i);
62         run("data.exe >data.txt");
63         run("std.exe <data.txt >std.txt");
64         st = clock();
65         int ret = run("user.exe <data.txt >user.txt");
66         if (ret) {
67             printf("Runtime Error - Exit code is %d\n", ret);
68             break;
69         }
70         ed = clock();
71         if (!fileCompare("std.txt", "user.txt")) {
72             printf("Wrong Answer.\n------------------------------\n");
73             puts(info);
74             printf("------------------------------\nNote: At most %d characters will be shown for both lines.\n", MAX_LEN);
75             printf("Press anykey to exit.\n");
76             getchar();
77             break;
78         } else {
79             printf("Accepted. Time: %dms.\n", int(ed - st));
80         }
81     }
82     return 0;
83 }

 

posted @ 2019-03-13 22:37  Q1311605467  阅读(206)  评论(0)  编辑  收藏  举报