C# interview questions and answers pdf 5. C interview questions and answers for freshers. It is basic c language technical frequently asked interview questions and answers. Write a c program to print Hello world without using any semicolon.
Swap two variables without using third variable. What is dangling pointer in c? Such pointer is known as dangling pointer and this problem is known as dangling pointer problem. What will be output of following c program? 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.
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. What is wild pointer in c? 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. C Programming interview questions and answers section for various interview, competitive examination and entrance test. Fully solved examples with detailed answer description, explanation are given and it would be easy to understand.
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