Question

What does this code do? On the flipside of this paper, write the same code in Java. #include <stdio.h> #include <stdlib.h> int main ) ( char *str: (char *) malloc (15) ; str strcpy (str, "Iron"); printf("String 8u\n", str, str); Address %s, (char ) realloc (str, 25); str strcat (str, "Maiden"); Su\n", str, str): Address %s, printf ("String free (str) return (0);

Answer 1

Every line consists of comment that contain explanation of that line

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#include <stdio.h>
#include <stdlib.h>

int main(){
   char *str; //Initialise a character pointer str
  
   str = (char*)malloc(15); //allocate 15 bytes memory of character type for str
   strcpy(str,"Iron"); //copy the string iron to str
   printf("String : %s, Address = %u\n",str,str); //print the string and address
  
   str = (char*)realloc(str,25); //reallocate the memory of str to 25 bytes
   strcat(str,"Maiden"); //concatenate the string to Maiden
   printf("String : %s, Address = %u\n",str,str);//print the string and address
  
   free(str);//free the memory that is allocated
  
   return 0;
  
}

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Java code for this :

public class Main
{
   public static void main(String[] args) {
       String str = new String("Iron");

       System.out.print("String: "+str);
   System.out.println(" Address: "+str.hashCode());
  
   str = str.concat("Maiden");
   System.out.print("String: "+str);
   System.out.println(" Address: "+str.hashCode());
  
   }
}