#52_Void Pointers

By

 # include <stdio.h>

# include <stdlib.h>
int main()
{
    int a;
    a=5;
    void* ptr=&a;
    printf("Address of a is:%d\n", ptr); 
    // printf("The value of a is:%d\n", *ptr);//void pointer cant be derefence directly
    printf("The value of a is:%d\n", (*(int*)ptr));//by casting method void pointer can derefermce
    return 0;
}

Comments

Post a Comment

Popular posts from this blog

#64_Funtions for File I/O in C

By
  # include   <stdio.h> int   main () {      FILE *  ptr = NULL ; //declaring file pointer                // char string[45]="This is another file."; //string to pass in file      // ptr=fopen("File.txt","w"); //opens the file to write      // fprintf(ptr, "%s", string);//to print content in file      // fclose(ptr);// to close the file after using                // char string[45]="This is another file's content."; //string to pass in file      // ptr=fopen("File.txt","a"); //opens the file to write...
Read more

Ch9_43_Ex3_GuessTheNumber

By
  package com.company ; import java.util.Random ; import java.util.Scanner ; public class Ch9_43_Ex3_GuessTheNumber { public static void main ( String [] args ) { Random rand = new Random (); int rand_num = rand . nextInt ( 100 ); System . out . println ( rand_num ); Scanner scan = new Scanner ( System . in ); int guessed_num = - 1 ; int numberOfGuesses = 1 ; while ( guessed_num != rand_num ) { System . out . println ( "Guess the number: " ); guessed_num = scan . nextInt (); if ( guessed_num > rand_num ) { System . out . println ( "Aww ...Too big number." ); numberOfGuesses ++; } else if ( guessed_num < rand_num ) { System . out . println ( "Oops...its a small number." ); numberOfGuesses ++; } } System . out . println ( "yehh...You got the number in...
Read more

#24_Stack_using_an_array

By
  #include   <stdio.h> #include   <stdlib.h> //Stack using an array struct   stack {      int  size;      int  top;      int   * arr; }; int   isEmpty ( struct   stack   * ptr ){      if  ( ptr ->top  ==   - 1 ){          return   1 ;     }      else {          return   0 ;     } } int   isFull ( struct   stack   * ptr ){      if  ( ptr ->top  ==   ptr ->size  -   1 ){          return   1 ;     }      else {          return   0 ;     } } void   Create...
Read more