Dangling Pointer in C

A pointer pointing to a memory location that has been deleted (or freed) is called dangling pointer. There are three different ways where Pointer acts as dangling pointer.

Source Code

//Dangling Pointer
int * value()
    int a=10;
    return &a;
int main()
    int *ptr=NULL;
    ptr=value(); //&a
    return 0;
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