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c language interview questions solution for freshers beginners placement tricky good pointers answers explanation operators data types arrays structures functions recursion preprocessors looping file handling strings switch case if else printf advance linux objective mcq faq online written test prime numbers armstrong fibonacci series factorial palindrome code programs examples on c++ tutorials and pdf. c interview questions and answers for freshers. it is basic c language technical frequently asked interview questions and answers. it. includes data structures, pointers interview questions and answers for experienced. interview questions and answer of c with explanation for fresher write a c program to print hello world without using any semicolon. answer 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 output: garbage value note: in some compiler you may get warning message returning address explanation: 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. in other word we can say a pointer whose pointing object has been deleted is called dangling pointer. a pointer in c which has not been initialized is known as wild pointer. here ptr is wild pointer because it has not been initialized. there is difference between the null pointer and wild pointer. null pointer points the base address of segment while wild pointer doesn’t point any specific memory location.