What will be the output of the following C code?#include

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What will be the output of the following C code?

#include <stdio.h>
    void main()
    {
        A();
        void A()
        {
            printf("Interview Mania");
        }
    }

1. Interview Mania
2. Compilation Error
3. Garbage value
4. Runtime Error
5. None of these

Correct Option: B

Compilation Error

main.c: In function ‘main’:
main.c:4:9: warning: implicit declaration of function ‘A’ [-Wimplicit-function-declaration]
         A();
         ^
main.c:5:14: warning: conflicting types for ‘A’
         void A()
              ^
main.c:5:14: error: static declaration of ‘A’ follows non-static declaration
main.c:4:9: note: previous implicit declaration of ‘A’ was here
         A();