Dangling pointer in C | Working with Dangling pointer | Dangling pointer Concept in C | Dangling pointer Examples in C | C Programming Dangling pointer

Dangling pointer in C | Working with Dangling pointer | Dangling pointer Concept in C | Dangling pointer Examples in C | C Programming Dangling pointer

If any pointer is pointing the memory address of any variable but after some variable has deleted from that memory location while pointer is still pointing such memory location. Such pointer is known as dangling pointer and this problem is known as dangling pointer problem.

#include

int *call();
void main(){

int *ptr;
ptr=call();

fflush(stdin);
printf("%d",*ptr);

}
int * call(){

int x=25;
++x;

return &x;
}


Output: Garbage value

variable x is local variable. Its scope and lifetime is within the function call hence after returning address of x variable x became dead and pointer is still pointing ptr is still pointing to that location. Solution of this problem: Make the variable x is as static variable.