pointers in c ppt

understanding pointers in c … It depends on the individual skill set also. Two pointers an be compared in a relational expression provided both the pointers are pointing to variables of the same type.Increment & Decrement Operations Using Pointer #include void main() int i=100,*iptr; float f=122.354,*fptr; char c='d' *cptr; iptr=&i; fptr=&f; cptr=&c; printf("The values of the variables"); printf("n%d" *iptr);printf("n%f" *fptr); printf( ' 'nStarting Address ' ; % u" ,iptr); printf("n%u",fptr); % u" ,cptr); iptr++; fptr++; cptr++ ; printf( ' 'nPointer Incrementing' ' ) ; % u" ,fptr); printf("n%u",cptr); iptr--; fptr--;CPtr--; printf( ' 'nPointer Decrementing' ; % u" ,iptr); % u" ,cptr); getch();(fit The Pointer Special Operators & -5 Returns the memory address of the operand It is the complement of &. + By writin the actual array element preceded by the ambersand( ) sign, 0 By writing a expression in which the subscript is added to the array nam./* Array Using Pointers */ #include #include void main() int b[100],*iptr; iptr=&b; clrscr(); printf("The initial value of iptr is %un",iptr); iptr++; printf("lncremented value of iptr is %un",iptr); getch();POINTERS IN ARRAYS Example 2 void main() int int *ptr,i; clrscr(); ptr=arr; // s e as printf("n The Result of the array is for(i=O;i.Pointers as Function Arguments When pointers are passed to a function : The address of the data item is passed and thus the function can freely access the contents of that address from within the function In this way, function arguments permit data-items to be altered in the calling routine and the function. 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O They increase the execution speed. In order to view it, please Magazines. Introduction to C Pointers. It provides power and flexibility to the language. Search Search. Not all pointers actually contain an address example NULL pointer. This is their website: ⇒ www.HelpWriting.net ⇐,taking surveys for cash online? POINTER ARITHMETIC Two arithmetic operations, addition and subtraction, may be performed on pointers.When we add 1 to a pointer, we are actually adding the size of data type in bytes, the pointer is pointing at. PPT7. O The function pointer can be used to call a function O Pointer arrays give a convenient method for storing strings OMany of the 'C' Built-in functions that work with strings use Pointers Olt provides a way of accessing a variable without referring to the variable directly.#include #include void main() int n=10; int *ptr; ptr=&n; printf("Value of n is %d",n); printf("nAddress of n is %x",&n); printf("nAddres of pointer is %x",ptr); printf("nvalue stored in pointer is %d" *ptr); getch();Example 2 #include #include #deiine size 10 void m in() char nam size]; char *i; printf("n En er your name "); gets(name); i=name; printf("n Now rinting your name is while(*i 'O') printf("%c" *i)'.Explain how the variable can be accessed by pointer Include void int r; float a,*b; clrscr(); printf("n Enter the radius of the circle"); a=3.14*r*r; printf("n The value of O/of" a)- printf("n The valåe of %u",&a); printf("n The value of b=%u",b); printf("n The value of O/of" *b)- getch();Pointer Arithmetic Addition and subtraction are the only operations that can be perfor ed on pointers, Take a loo at the following example : int.

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. English. Pointers To Structures PO ters to structures are allowed in C, but there are some special a ects to structure pointers that a user of pointers to structure ust be aware of, The fol wing statement declares ptr as a pointer to data of that type structJzook 'ptr; 25 Learn more about Scribd Membership.

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