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Wednesday 6 June 2012

C++ Program which calculates the day of the week for any given date & month of the year 2002

C++ Program which calculates the day of the week for any given date & month of the year 2002



#include<stdio.h>
#include<conio.h>
#include<iostream.h>

void main()
{
clrscr();
int opt,date,day; 
char b; 

cout<<"****A program to find out the day of the week for any date of the year 2002****\n\n"; 
cout<<"1.January\n2.February\n3.March\n4.April\n5.May\n6.June\n7.july\n8.August\n9.September\n10.October\n11.November\n12.December\n"; 
a: cout<<"\nEnter the value of the month:"; 
cin>>opt; 
cout<<"\nEnter the date of the month:"; 
cin>>date; 

switch(opt) 
{ 
case 1: if(date<=31)
{day=(8+date)%7;} 
else 
cout<<"\nFor u'r kind information january has only 31 days.\n"; 
break; 

case 2: if(date<=28) 
{day=(11+date)%7;} 
else 
cout<<"\nFor u'r kind information february has only 28 days.\n"; 
break; 

case 3: if(date<=31) 
{day=(11+date)%7;}
else 
cout<<"\nFor u'r kind information march has only 31 days.\n"; 
break; 

case 4: if(date<=30) 
{day=(7+date)%7;} 
else 
cout<<"\nFor u'r kind information april has only 30 days.\n"; 
break; 

case 5: if(date<=31) 
{day=(9+date)%7;} 
else
cout<<"\nFor u'r kind information may has only 31 days.\n"; 
break; 

case 6: if(date<=30) 
{day=(12+date)%7;} 
else 
cout<<"\nFor u'r kind information june has only 30 days.\n"; 
break; 

case 7: if(date<=31) 
{day=(7+date)%7;} 
else 
cout<<"\nFor u'r kind information july has only 31 days.\n";
break; 

case 8: if(date<=31) 
{day=(10+date)%7;} 
else 
cout<<"\nFor u'r kind information august has only 31 days.\n"; 
break; 

case 9: if(date<=30) 
{day=(6+date)%7;} 
else 
cout<<"\nFor u'r kind information september has only 30 days.\n"; 
break;

case 10: if(date<=31) 
{day=(8+date)%7;} 
else 
cout<<"\nFor u'r kind information october has only 31 days.\n"; 
break; 

case 11: if(date<=30) 
{day=(11+date)%7;} 
else 
cout<<"\nFor u'r kind information november has only 30 days.\n"; 
break; 

case 12: if(date<=31) 
{day=(6+date)%7;} 
else 
cout<<"\nFor u'r kind information december has only 31 days.\n"; 
break; 
} 

if(day==0) 
{cout<<"\nIts SUNDAY.\n";} 

if(day==1) 
{cout<<"\nIts MONDAY.\n";} 

if(day==2) 
{cout<<"\nIts TUESDAY.\n";} 

if(day==3) 
{cout<<"\nIts WEDNESDAY.\n";} 

if(day==4) 
{cout<<"\nIts THURSDAY.\n";} 

if(day==5) 
{cout<<"\nIts FRIDAY.\n";} 

if(day==6)
{cout<<"\nIts SATURDAY.\n";} 

cout<<"\n****************************************************\n"; 
cout<<"\nWould u like to continue?[y/n]:"; 
cin>>b; 
if(b=='y'||b== 'Y')
goto a;
else
getch();
} 

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