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  1. #include <stdio.h>
  2. #include <limits.h>
  3.  
  4. unsigned long long ConstructMoney(unsigned long long dollars, unsigned cents)
  5. {
  6.   return dollars * 100 + cents;
  7. }
  8.  
  9. void PrintWithCommas(unsigned long long n)
  10. {
  11.   char s[sizeof n * CHAR_BIT + 1];
  12.   char *p = s + sizeof s;
  13.   unsigned count = 0;
  14.   *--p = '\0';
  15.   do
  16.   {
  17.     *--p = '0' + n % 10;
  18.     n /= 10;
  19.     if (++count == 3 && n)
  20.     {
  21.       *--p = ',';
  22.       count = 0;
  23.     }
  24.   } while (n);
  25.   printf("%s", p);
  26. }
  27.  
  28. void PrintMoney(unsigned long long n)
  29. {
  30.   PrintWithCommas(n / 100);
  31.   putchar('.');
  32.   n %= 100;
  33.   putchar('0' + n / 10);
  34.   putchar('0' + n % 10);
  35. }
  36.  
  37. int main(void)
  38. {
  39.   PrintMoney(ConstructMoney(0, 0)); puts("");
  40.   PrintMoney(ConstructMoney(0, 1)); puts("");
  41.   PrintMoney(ConstructMoney(1, 0)); puts("");
  42.   PrintMoney(ConstructMoney(1, 23)); puts("");
  43.   PrintMoney(ConstructMoney(12, 34)); puts("");
  44.   PrintMoney(ConstructMoney(123, 45)); puts("");
  45.   PrintMoney(ConstructMoney(1234, 56)); puts("");
  46.   PrintMoney(ConstructMoney(12345, 67)); puts("");
  47.   PrintMoney(ConstructMoney(123456, 78)); puts("");
  48.   PrintMoney(ConstructMoney(1234567, 89)); puts("");
  49.   return 0;
  50. }
  51.  
Success #stdin #stdout 0s 1788KB
comments (?)
stdin 
Standard input is empty
stdout 
0.00
0.01
1.00
1.23
12.34
123.45
1,234.56
12,345.67
123,456.78
1,234,567.89
https://ideone.com/eK0dwg
language:
C99 (gcc 8.3)
created:
12 years ago
visibility:
public

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