C program to check if input year is leap year

Q:C program to check if input year is leap year or not when the year is input from the user

#include

#include

void main()

{

int year;

clrscr();

printf("enter any year: ");

scanf("%d",year);

if(year%400==0 || year%100!=0 && year%4==0)

{

printf("this year is leap year");

}

else

{

printf("this year is not leap year");

}

getch();

}

c program to check position of point in a circle

Q:Write a c program to check whether a given point is outside, inside or on the circle when radius and coordinates of points are input

#include

#include

void main()

{

int x,y,r,d;

clrscr();

printf("enter x co ordinate");

scanf("%d",&x);

printf("enter y co ordinate");

scanf("%d",&y);

printf("enter radius");

scanf("%d",&r);

d=(x*x)+(y*y);

r=r*r;

if(d==r)

{

printf("point is on the circle");

}

else if(d>r)

{

printf("point is outside the circle");

}

else if(d

{

printf("point is inside the circle");

}

getch();

}

C program to compare area and perimeter

Q:Given the length and breadth of rectangular,write a program to find whether the area of the rectangle is greater than its perimeter.

#include

#include

void main()

{

int l,b,a,p;

clrscr();

printf("enter the length: ");

scanf("%d",&l);

printf("enter the bragth: ");

scanf("%d",&b);

a=l*b;

p=2*l+2*b;

if(a>p)

{

printf("area is big");

}

else

{

printf("perameter is big");

}

getch();

}

C program to check validity of triangle

Q:Write a c program to check whether a triangle is valid or not ..when the three angles of the triangle are entered through keyboard.A triangle is valid if sum of all angles is 180

#include

#include

void main()

{

int A1,A2,A3;

clrscr();

printf("enter three angles: ");

scanr("%d",&A1);

scanf("\n%d",&A2);

scanf("\n%d",&A3);

if(A1+A2+A3==180)

{

printf("valid tringle");

}

else

{

printf("invalid tringle");

}

getch();

}

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();

}