1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*
* Copyright (C) 2024 Tristan Riehs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <assert.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <readline/readline.h>
static int lower = 0;
static int upper = 100;
static FILE *logfile;
/* Return a random number x such that lower <= x < upper. */
static int
calculer_rand(void)
{
return lower + rand()%(upper-lower);
}
static void *
measure_before(void)
{
/* TODO: measure time in ms */
return (void *) time(NULL);
}
int
measure_after(void *data)
{
int t0 = (intptr_t) data;
time_t now = time(NULL);
int dt = now - t0;
char buf[64] = {0};
struct tm *tm = localtime(&now);
size_t bytes_written = strftime(buf, sizeof(buf), "%F\t", tm);
assert(bytes_written);
bytes_written += sprintf(buf + bytes_written, "%d\n", dt);
return bytes_written != fwrite(buf, 1, bytes_written, logfile);
}
int
main(void)
{
char prompt[31] = {0};
int x, y, res;
char *input;
logfile = fopen("./calculer.log", "a");
assert(logfile);
while (1)
{
x = calculer_rand();
y = calculer_rand();
void *measure_data = measure_before();
res = x+y;
assert(!measure_after(measure_data));
sprintf(prompt, "%d + %d = ", x, y);
input = readline(prompt);
if (strcmp(input, "q") == 0)
{
free(input);
fclose(logfile);
exit(0);
}
if (atoi(input) == res)
printf("RIGHT\n");
else
printf("WRONG\n");
free(input);
}
fclose(logfile);
return 0;
}
|
