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Introduction
What is C Identifiers Characters in C Datatypes & Variables Structure of C Program How to install turbo C in windows XP? How to install turbo C in windows 7/8?
Introduction [cont'd]
How to Compile and Run? Header files C Tokens Escape sequence Keywords Storage class specifier Constants
Introduction [cont'd]
Volatile
Operators
Operators Arithmetic Operators Relational operators Logical operators Increment & Decrement Operators Assignment Operators Bitwise operators
Operators [cont'd]
Conditional Operator Sizeof Operator
Input Output Functions
printf Scanf Getch putch getche Putchar getchar
Input Output Functions [cont'd]
gets puts
Decision Statements
If If-Else Else-If Nested If-Else Switch Goto
Looping Statements
For While Do-While Break Continue
Arrays
What is Array? One Dimensional Two Dimensional Multi Dimensional
Strings
What is String? Strlen Strcpy Strcmp Strlwr Strupr Strchr
Strings [cont'd]
Strstr Strcat Strrev
User-defined Functions
What is Functions? Function prototype Defining a Function Simple Arguments Return Value Arguments with Return value
User-defined Functions [cont'd]
Call by value Call by reference Recursion Nesting Functions Arrays as Arguments
Structures and Unions
Define Structure Copying Structures Comparing two Structures Arrays of Structures Nested Structures Structure with Functions Define Union
Structures and Unions [cont'd]
Different between Struct and Union
Pointers
Define Pointers & Operator Operators in pointers Pointers Array Pointers as Function Arguments Functions Returning Pointers Pointers and Structures
Memory
Dynamic Memory Allocation Malloc Calloc Realloc Free
Files
What is Files? Write Files Read Files Append Files Error handling
# Preprocessor
What is preprocessor in C? #include #define #if and #else #elif #ifdef #ifndef
# Preprocessor [cont'd]
#undef
Operators in pointers in Pointers of Programming in C
2015 Views
Operators in pointers 
Pointer operators are used to increase the address or decrease the address position.

Example
int *ptr;

If ptr variable points address 2002 then performs
ptr++;
ptr variable address moves to 2004 [increase by two bytes of memory because ptr is int datatype]
Program
	#include
	void main(){
	   //+1 increase the address position by 2 bytes for int variable
	   //-1 decrease the address position by 2 bytes for int variable
	   int *ptr;
	   int i;
	   for (i=0;i<5;i++){
	       printf("Enter the number\n");
	       scanf("%d",ptr++);
	   }
	    for (i=0;i<5;i++){
	       printf("%d\n",*(--ptr));
	   }
	}
Output 
Enter the number
12
Enter the number
13
Enter the number
14
Enter the number
15
Enter the number
16

16
15
14
13
12
Previous Topics
Previous lessons of current book.
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Structures and Unions of Programming in C
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