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Data Structures

947 views • 61 slides

Introduction to Pointers.

Introduction to Pointers. What is a pointer?. A derived type which holds the address of a variable. Simply a memory location where the variable is stored in system. Pointer is always a whole number, no matter whether it holds the addr of int , char, float etc

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What is a pointer?

What is a pointer?. A derived type which holds the address of a variable. Simply a memory location where the variable is stored in system. Pointer is always a whole number, no matter whether it holds the addr of int , char, float etc Int a=100;int * ptr ; ptr =&a;

346 views • 22 slides

11/2 , 11/4 ?? ??

11/2 , 11/4 ?? ??. Structure alignment malloc ? free (). Code example #6 : structure alignment. int main( int argc , char * args []) { A a ; B b ; C c ; D d ; printf ( "%d " , sizeof (a)); //5 packed! printf ( "%d " , sizeof (b)); //8 = int * m;

190 views • 6 slides