48 lines
947 B
C
Executable File
48 lines
947 B
C
Executable File
#include <time.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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void
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str_to_ll(char *str, long long *num)
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{
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errno = 0;
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char *endptr;
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*num = strtoll(str, &endptr, 10);
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if (*endptr || errno || endptr == str) {
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fprintf(stderr, "Invalid number: %s\n", str);
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exit(1); // TODO: по-хорошему заменить на внешний обработчик ошибок
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}
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return;
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}
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int
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main(int argc, char **argv)
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{
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long long year, mth, res = 0;
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str_to_ll(argv[1], &year);
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str_to_ll(argv[2], &mth);
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struct tm t = {0};
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t.tm_isdst = -1;
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t.tm_mday = 1;
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t.tm_mon = mth - 1;
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t.tm_year = year - 1900;
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while (t.tm_mon == mth - 1) {
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if (t.tm_wday > 0 && t.tm_wday < 5) {
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res += 8;
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} else if (t.tm_wday == 5) {
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res += 6;
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}
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t.tm_mday++;
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mktime(&t);
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}
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printf("%d\n", (int) res);
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return 0;
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}
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