extern variable

    main()

{  

         extern i;

    printf("%d\n",i);

         {

             int i=20;

         printf("%d\n",i);

         }

}

Answer:

Linker Error : Unresolved external symbol i

Explanation:

The identifier i is available in the inner block and so using extern has no use in resolving it.

Blog Author: Vijay Kumar

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