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Capgemini Interview Questions C 1)If we write  two main functions  what will happen ? 2)Can a  pointer be written  in Structure? 3)Difference between  printf and sprintf  ? 4)Difference between  C file program  and  Cpp file program  ? 5)Some  file functions  ? 6)Basic  File Programs ? 7)About  EOF  ? 8)Difference between  malloc()  and  calloc()  ? 9)What is the use of  Extern  Storage Class ? 10)Difference between  auto  and  register  ? 11)If you don't write  stdio.h  what will happen ? 12)What is  Stack  ? 13)What is  Heap  ? C++ 1)Explain about  Standard Template Library ? 2)What is  Template  ? 3)What are different types of  Templates ? 4)What is  Pure Virtual Function  ? 5)What is an  Abstract Class  ? 6)What is the  Purpose of an Abstract Class ? 7)What is the need of  Virtual Table  ? 8)What is  Multilevel Inheritance  ? 9)What is  Diamond Class ? 10)What are the  Operators that can't be Overloaded  ? 11)Difference between  Constructor  and  Destructor  ? 12)Differenc