C program to display day on !st january of any year

Q:According to Gregorian calendar,it was monday on 01/01/1900.If any year is input through the keyboard.write a program to find out what was the date on 1st January of that year

#include

#include

void main()

{

long int nd,ld,td,fd,year;

clrscr();

printf("enter the year");

scanf("%ld",&year);

nd=(year-1)*365;

ld=(year-1)/4-(year-1)/100+(year-1)/400;

td=nd+ld;

fd=td%7;

if(fd==0)

printf("\n monday");

if(fd==1)

printf("\n tuesday");

if(fd==2)

printf("\n wednesday");

if(fd==3)

printf("\n thursday");

if(fd==4)

printf("\n friday");

if(fd==5)

printf("\n saturday");

if(fd==6)

printf("\n sunday");

getch();

}