#include<stdio.h>
#include<conio.h>
struct date{
int day,mon,year;
}dat;
int main(){
int y,f,o_day,od_temp,i,temp,c,o_year,l_year;
while(1){
y=0,o_day=0,od_temp=0;temp=0;
printf("Enter Date (dd/mm/yyyy): ");
scanf("%d/%d/%d",&dat.day,&dat.mon,&dat.year);
f=dat.year%4==0 ? 29:28;
int d[12]={31,f,31,30,31,30,31,31,30,31,30,31};
while(temp<=dat.year)
temp+=400;
if(temp>dat.year)
temp-=400;
dat.year-=temp;
c=(dat.year-dat.year%100)/100;
od_temp=5*c+c/4;
od_temp%=7;
y=dat.year%100-1;
l_year=y/4;
o_year=y-l_year;
od_temp+=(2*l_year+o_year);
od_temp%=7;
temp=0;
for(i=0;i<dat.mon-1;i++)
temp+=d[i];
temp+=dat.day;
od_temp+=temp%7;
o_day=od_temp%7;
switch(o_day){
case 1:
printf("Monday");
break;
case 2:
printf("Tuesday");
break;
case 3:
printf("Wednesday");
break;
case 4:
printf("Thusday");
break;
case 5:
printf("Friday");
break;
case 6:
printf("Saturday");
break;
case 0:
printf("Sunday");
break;
}
printf("\n\n");
}
}