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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. struct Ngay
  5. {
  6.     int ngay,thang,nam;
  7. };
  8.  
  9. void nhap(Ngay &n)
  10. {
  11.     cin>>n.ngay>>n.thang>>n.nam;
  12. }
  13.  
  14. bool kt(Ngay n)
  15. {
  16.     int a;
  17.     if(n.nam<=0){
  18.        // cout<<"nam khong hop le";
  19.         return false;
  20.     }
  21.     else if(n.thang<=0||n.thang>12){
  22.        // cout<<"thang khong hop le";
  23.         return false;
  24.     }
  25.     else {
  26.         switch(n.thang)
  27.         {
  28.         case 1:
  29.         case 3:
  30.         case 5:
  31.         case 7:
  32.         case 8:
  33.         case 10:
  34.         case 12:
  35.             a=31;
  36.             break;
  37.  
  38.         case 2:
  39.             if(n.nam%4==0&&n.nam%100!=0||n.nam%400==0){
  40.                 a=29;
  41.                 break;
  42.             }
  43.             else{
  44.                 a=28;
  45.                 break;
  46.             }
  47.  
  48.         case 4:
  49.         case 6:
  50.         case 9:
  51.         case 11:
  52.             a=30;
  53.             break;
  54.         }
  55.         if(n.ngay<=0||n.ngay>a){
  56.            // cout<<"ngay khong hop le";
  57.             return false;
  58.         }
  59.     }
  60.     return true;
  61.  
  62. }
  63.  
  64. void ngayketiep(Ngay n)
  65. {
  66.     n.ngay++;
  67.     if(kt(n)==false){
  68.         n.ngay=1;
  69.         n.thang++;
  70.         if(n.thang>12){
  71.             n.thang=1;
  72.             n.nam++;
  73.         }
  74.     }
  75.     cout<<n.ngay<<"/"<<n.thang<<"/"<<n.nam;
  76. }
  77.  
  78. int main()
  79. {
  80.     Ngay n;
  81.     nhap(n);
  82.     if(kt(n)){
  83.         ngayketiep(n);
  84.     }
  85.     if(!kt(n)){
  86.         cout<<"ngay khong hop le";
  87.     }
  88. }
  89.  
Success #stdin #stdout 0.01s 5316KB
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stdin
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31 12 2023
stdout
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1/1/2024
https://ideone.com/dtMS46
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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