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  1. #include <stdio.h>
  2. #include <math.h>
  3. int main()
  4. {
  5.   int h,q,m,k,j,day,month,year;
  6.   printf("Enter the date (dd/mm/yyyy)\n");
  7.   scanf("%i/%i/%i",&day,&month,&year);
  8.   if(month == 1)
  9.   {
  10.     month = 13;
  11.     year--;
  12.   }
  13.   if (month == 2)
  14.   {
  15.     month = 14;
  16.     year--;
  17.   }
  18.   q = day;
  19.   m = month;
  20.   k = year % 100;
  21.   j = year / 100;
  22.   h = q + 13*(m+1)/5 + k + k/4 + j/4 + 5*j;
  23.   h = h % 7;
  24.   switch(h)
  25.   {
  26.     case 0 : printf("Saturday.\n"); break;
  27.     case 1 : printf("Sunday.\n"); break;
  28.     case 2 : printf("Monday. \n"); break;
  29.     case 3 : printf("Tuesday. \n"); break;
  30.     case 4 : printf("Wednesday. \n"); break;
  31.     case 5 : printf("Thurday. \n"); break;
  32.     case 6 : printf("Friday. \n"); break;
  33.   }
  34.   return 0;
  35. }
Success #stdin #stdout 0s 1836KB
comments (?)
stdin
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28/02/2013
stdout
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Enter the date (dd/mm/yyyy)
Thurday.
https://ideone.com/CkDGvY
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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