code:
include<stdio.h>
#include<conio.h>
int main () {
int n,i;
printf("sothang: ",n);
scanf("%d",&n);
printf("nam: ",i);
scanf("%d",&i);
if(n<1||n>13)
printf("nhap lai");
else
{
switch(n)
{
case 3 :
case 1:
case 5:
case 7:
case 8:
case 10:
case 12:
printf("\n thang co 31 ngay");
break;
case 2:
if(i%4==0&&i%100!=0||i%400==0)
printf("\n co 29 ngay");
else{
printf("\n co 28 ngay");
}
break;
case 4 :
case 6:
case 9:
case 11:
printf("\nlathang co 30 ngay");
break;
default:
printf("khong phai thang trong nam");
break;
}
}getch();
}
include<stdio.h>
#include<conio.h>
int main () {
int n,i;
printf("sothang: ",n);
scanf("%d",&n);
printf("nam: ",i);
scanf("%d",&i);
if(n<1||n>13)
printf("nhap lai");
else
{
switch(n)
{
case 3 :
case 1:
case 5:
case 7:
case 8:
case 10:
case 12:
printf("\n thang co 31 ngay");
break;
case 2:
if(i%4==0&&i%100!=0||i%400==0)
printf("\n co 29 ngay");
else{
printf("\n co 28 ngay");
}
break;
case 4 :
case 6:
case 9:
case 11:
printf("\nlathang co 30 ngay");
break;
default:
printf("khong phai thang trong nam");
break;
}
}getch();
}