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- #include <iostream>
- #include <conio.h>
- using namespace std;
- int main()
- {
- int ng,d,m,y;
- cout<<"nhap ngay thang nam: ";cin>>ng>>m>>y;
- if ((ng>0)&&(m>0)&&(y>0))
- {
- if (y%4==0)
- {
- switch(m)
- {
- case 1 : d=31;break;
- case 2 : d=29;break;
- case 3 : d=31;break;
- case 4 : d=30;break;
- case 5 : d=31;break;
- case 6 : d=30;break;
- case 7 : d=31;break;
- case 8 : d=31;break;
- case 9 : d=30;break;
- case 10: d=31;break;
- case 11: d=30;break;
- case 12: d=31;break;
- }
- }
- else
- {
- switch(m)
- {
- case 1 : d=31;break;
- case 2 : d=28;break;
- case 3 : d=31;break;
- case 4 : d=30;break;
- case 5 : d=31;break;
- case 6 : d=30;break;
- case 7 : d=31;break;
- case 8 : d=31;break;
- case 9 : d=30;break;
- case 10: d=31;break;
- case 11: d=30;break;
- case 12: d=31;break;
- }
- }
- if (ng<=d)
- {
- cout<<"ngay thang nam hop le";
- }
- else
- {
- cout<<"ngay thang nam khong hop le";
- }
- }
- else
- {
- cout<<"ngay thang nam khong hop le";
- }
- }
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