FreePrograms

What is C	C vs C++ vs Java	Program Structure	Data Types in C	Basic Rules of C & C++
Functions in C	If, Else Conditions	Loops in C	Switch Case	Arrays
Pointers	Structures in C	Strings in C	Command Line Arguments	Type Casting
Linked Lists	Recursion	Binary Trees	Inheritance	Multiple Inheritance
Templates	File I/O	Object Oriented Programming	Data Structures in C	C interview Questions

C programming Tutorial : Free C Programs, C Programs Download

1.INPUT RADIUS R, AND CENTRE (H,K)

X=0

Y=R

Pk=1-R OR 5/4-R

2. REPEAT UNTIL X>Y

3. IF(Pk<0)

X+1

Pk+1=Pk+2X+1

ENDIF

ELSE

X++

Y--

Pk+1=Pk+2X+1-2Y

4. PLOT POINT (X,Y) FOR 8 DIFFERENT OCTANTS

PLOT(X+H,Y+K)

PLOT(Y+H,X+K) ---

5. GOTO STEP 2

6. STOP