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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #define MIN 1000
  4. #define MAX 10000
  5. const int min = MIN, max = MAX;
  6. int kiem_tra_nam_nhuan(int nam)
  7. {
  8.    return ((nam%4==0&&nam%100!=0)||nam%400==0);
  9. }
  10. int so_ngay_trong_thang( int thang, int nam)
  11. {
  12.     int so_ngay ;
  13.     int kiem_tra;
  14.     switch(thang)
  15.     {
  16.     case 1:
  17.     case 3:
  18.     case 5:
  19.     case 7:
  20.     case 8:
  21.     case 10:
  22.     case 12:so_ngay = 31;break;
  23.     case 4:
  24.     case 6:
  25.     case 9:
  26.     case 11:so_ngay = 30;break;
  27.     case 2:
  28.         kiem_tra = kiem_tra_nam_nhuan(nam);
  29.         if(kiem_tra==1)
  30.         {
  31.             so_ngay = 29;
  32.         }
  33.         else
  34.         {
  35.             so_ngay = 28;
  36.         }
  37.     }
  38.     return so_ngay;
  39. }
  40. void kiem_tra_hop_le(int ngay, int thang, int nam)
  41. {
  42.     if(nam<min||nam>max)
  43.     {
  44.         printf("%d/%d/%d: không hợp lệ\n",ngay,thang,nam);
  45.     }
  46.     else
  47.     {
  48.         if(thang<1||thang>12)
  49.         {
  50.             printf("%d/%d/%d: không hợp lệ\n",ngay,thang,nam);
  51.         }
  52.         else
  53.         {
  54.             if(ngay<1||ngay>so_ngay_trong_thang(thang,nam))
  55.             {
  56.                 printf("%d/%d/%d: không hợp lệ\n",ngay,thang,nam);
  57.             }
  58.             else
  59.             {
  60.                 printf("%d/%d/%d: hợp lệ\n",ngay,thang,nam);
  61.             }
  62.         }
  63.     }
  64. }
  65.  
  66. int main()
  67. {
  68.  
  69.    #ifndef ONLINE_JUDGE
  70.    freopen("D:\\input.txt","r",stdin);
  71.    #endif // ONLINE_JUDGE
  72.    int ngay, thang , nam;
  73.    scanf("%d/ %d/ %d", &ngay, &thang , &nam);
  74.    kiem_tra_nam_nhuan(nam);
  75.    so_ngay_trong_thang(thang,nam);
  76.    kiem_tra_hop_le(ngay,thang,nam);
  77.  
  78.     return 0;
  79. }
  80.  
  81.  
Success #stdin #stdout 0s 9432KB
comments (?)
stdin
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29/2/3333
stdout
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29/2/3333: không hợp lệ
https://ideone.com/OIcfOm
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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