Difference between dangling pointer and memory leak

Question

I don\'t understand the difference between a dangling pointer and a memory leak. How are these two terms related?

Answer 1

A pointer pointing to a memory location that has been deleted (or freed) is called dangling pointer.

#include 
#include  
 void  main()
 {
    int *ptr = (int *)malloc(sizeof(int));
    // After below free call, ptr becomes a 
    // dangling pointer
    free(ptr); 
 }

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