82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
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#include "age_calc.h"
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static int months_table[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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static void calc_day_year_month(time_t today, int day_birth, int month_birth, int year_birth, int *result) {
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int day_curr, month_curr, year_curr, total_days, total_months, total_years;
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struct tm *struct_today;
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struct_today = localtime(&today);
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day_curr = struct_today->tm_mday;
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month_curr = struct_today->tm_mon + 1;
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year_curr = struct_today->tm_year + 1900;
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if((year_curr%4==0 && year_curr%100 !=0) || year_curr%400==0)
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months_table[2] = 29;
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else
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months_table[2] = 28;
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total_years = year_curr - year_birth;
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total_months = month_curr - month_birth;
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total_days = day_curr - day_birth;
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if(total_days < 0) {
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total_days += months_table[month_curr==1 ? 12 : month_curr-1];
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total_months--;
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}
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if(total_months < 0) {
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total_months += 12;
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total_years--;
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}
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result[0] = total_days;
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result[1] = total_months;
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result[2] = total_years;
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}
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static void construct_phrases(int *result, char **buffer) {
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sprintf(buffer[0], "%02d %s", result[2], result[2] > 1 ? "years" : "year");
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sprintf(buffer[1], "%02d %s", result[1], result[1] > 1 ? "months" : "month");
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sprintf(buffer[2], "%02d %s", result[0], result[0] > 1 ? "days" : "day");
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}
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static char **alloc_phrases() {
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char **phrases;
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phrases = malloc(NUMBER_OF_ROWS * sizeof(char *));
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int i;
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for(i = 0; i < NUMBER_OF_ROWS; i++)
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phrases[i] = malloc(NUMBER_OF_COLUMNS * sizeof(char));
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return phrases;
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}
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void clear_phrases(char **phrases) {
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int i;
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for(i = 0; i < NUMBER_OF_ROWS; i++)
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free(phrases[i]);
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free(phrases);
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}
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char **get_phrases(int day, int month, int year) {
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time_t today;
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time(&today);
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char **phrases = alloc_phrases();
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int result[3];
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calc_day_year_month(today, day, month, year, result);
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construct_phrases(result, phrases);
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return phrases;
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}
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