Initial commit

2019-11-15 12:59:38 +01:00
parent 40a414d210
commit b880c3ccde
6814 changed files with 379441 additions and 0 deletions
@@ -0,0 +1,155 @@
+Forever Calender in C++
+
+#include<iostream.h>
+#include<conio.h>
+
+int step1 (int);
+void month_name(int);
+int no_days(int,int);
+int leap(int);
+
+void main()
+{
+ restart:
+ clrscr();
+ cout<<"Enter year : ";
+ unsigned int y,m;
+ cin>>y;
+ int x;
+ x=step1(y);
+ int month[14][12]= {1,4,4,7,2,5,7,3,6,1,4,6,
+		     2,5,5,1,3,6,1,4,7,2,5,7,
+		     3,6,6,2,4,7,2,5,1,3,6,1,
+		     4,7,7,3,5,1,3,6,2,4,7,2,
+		     5,1,1,4,6,2,4,7,3,5,1,3,
+		     6,2,2,5,7,3,5,1,4,6,2,4,
+		     7,3,3,6,1,4,6,2,5,7,3,5,
+		     1,4,5,1,3,6,1,4,7,2,5,7,
+		     2,5,6,2,4,7,2,5,1,3,6,1,
+		     3,6,7,3,5,1,3,6,2,4,7,2,
+		     4,7,1,4,6,2,4,7,3,5,1,3,
+		     5,1,2,5,7,3,5,1,4,6,2,4,
+		     6,2,3,6,1,4,6,2,5,7,3,5,
+		     7,3,4,7,2,5,7,3,6,1,4,6};
+ cout<<"Enter month (1 - 12) : ";
+ month_input:
+ cin>>m;
+ if(m<1 || m>12)
+ {
+  cout<<"Enter a valid month (1 - 12) : ";
+  goto month_input;
+ }
+ cout<<"
+
+		";
+ month_name(m);
+ cout<<' '<<y<<"
+
+Mon	Tue	Wed	Thu	Fri	Sat	Sun
+";
+ int j=month[x-1][m-1], days=no_days(m,y);
+ for (int i=0; i<j-1; i++)
+  cout<<'	';
+ for(i=1; i<=days; i++)
+ {
+  cout<<i<<'	';
+  if(j==7)
+  {
+   cout<<'
+';
+   j=1;
+  }
+  else
+   j++;
+ }
+ cout<<"
+
+Try for another month? (y/n) : ";
+ char ch;
+ cin>>ch;
+ if(ch=='y' || ch=='Y')
+  goto restart;
+}
+int step1 (int y)
+{
+ int x=y%7;
+ x+=(y-1)/4;
+ x-=(y-1)/100;
+ x+=(y-1)/400;
+ x=x%7;
+ if(x==0)
+  x=7;
+ if(leap(y))
+  x+=7;
+ return x;
+}
+void month_name(int m)
+{
+ switch(m)
+ {
+  case 1 : cout<<"January";
+	break;
+  case 2 : cout<<"February";
+	break;
+  case 3 : cout<<"March";
+	break;
+  case 4 : cout<<"April";
+	break;
+  case 5 : cout<<"May";
+	break;
+  case 6 : cout<<"June";
+	break;
+  case 7 : cout<<"July";
+	break;
+  case 8 : cout<<"August";
+	break;
+  case 9 : cout<<"September";
+	break;
+  case 10: cout<<"October";
+	break;
+  case 11: cout<<"November";
+	break;
+  case 12: cout<<"December";
+	break;
+ }
+}
+
+int no_days(int mon, int y)
+{
+ int d;
+ switch(mon)
+ {
+  case 1 :
+  case 3 :
+  case 5 :
+  case 7 :
+  case 8 :
+  case 10:
+  case 12: d=31;
+	   break;
+  case 4 :
+  case 6 :
+  case 9 :
+  case 11: d=30;
+	   break;
+  case 2 : if(leap(y))
+	    d=29;
+	   else
+	    d=28;
+	   break;
+ }
+ return d;
+}
+int leap (int y)
+{
+ if (y%100==0)
+  if (y%400==0)
+   return 1;
+  else
+   return 0;
+ else
+  if (y%4==0)
+   return 1;
+  else
+   return 0;
+}