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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
/* C99 bools */
_Bool just_a_flag = false;
bool another_flag = true;
void convert(int thousands, int hundreds, int tens, int ones)
{
char *num[] = {"", "One", "Two", "Three", "Four", "Five", "Six",
"Seven", "Eight", "Nine"};
char *for_ten[] = {"", "", "Twenty", "Thirty", "Fourty", "Fifty", "Sixty",
"Seventy", "Eighty", "Ninty"};
char *af_ten[] = {"Ten", "Eleven", "Twelve", "Thirteen", "Fourteen",
"Fifteen", "Sixteen", "Seventeen", "Eighteen", "Ninteen"};
printf("\nThe year in words is:\n");
printf("%s thousand", num[thousands]);
if (hundreds != 0)
printf(" %s hundred", num[hundreds]);
if (tens != 1)
printf(" %s %s", for_ten[tens], num[ones]);
else
printf(" %s", af_ten[ones]);
va_list jajaja;
}
int main()
{
int year;
int n1000, n100, n10, n1;
printf("\nEnter the year (4 digits): ");
scanf("%d", &year);
if (year > 9999 || year < 1000)
{
printf("\nError !! The year must contain 4 digits.");
exit(EXIT_FAILURE);
}
n1000 = year/1000;
n100 = ((year)%1000)/100;
n10 = (year%100)/10;
n1 = ((year%10)%10);
convert(n1000, n100, n10, n1);
return 0;
}
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