diff options
| -rw-r--r-- | src/calculer.c | 48 |
1 files changed, 46 insertions, 2 deletions
diff --git a/src/calculer.c b/src/calculer.c index 1c78197..6ed5983 100644 --- a/src/calculer.c +++ b/src/calculer.c @@ -17,20 +17,49 @@ #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. */ -int -calculer_rand() +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) { @@ -38,19 +67,34 @@ main(void) 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; } |