C Programming

Dereference, Reference

Predict the output of below program

#include<stdio.h>
int main()
{
 char *ptr = "geeksforgeeks";
 printf("%c\n", *&*&*ptr);

 getchar();
 return 0;
}

Output: g

Explanation: The operator * is used for dereferencing and the operator & is used to get the address. These operators cancel effect of each other when used one after another. We can apply them alternatively any no. of times. For example *ptr gives us g, &*ptr gives address of g, *&*ptr again g, &*&*ptr address of g, and finally *&*&*ptr gives ‘g’

Now try below

#include<stdio.h>
int main()
{
 char *ptr = "geeksforgeeks";
 printf("%s\n", *&*&ptr);

 getchar();
 return 0;
}

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