Explain the difference between strcpy() and memcpy() function?


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please tell me the logic for this C program : INPUT (string):ABCD OUTPUT :BCDA CDAB DABC

2 Answers   Mphasis,


What is the difference b/w Structure & Union?

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Write an interactive c program that will encode or decode a line of text. To encode a line of text, proceed as follows: Convert each character, including blank spaces, to its ASCII equivalent. Generate a positive random integer. Add this integer to the ASCII equivalent of each character. The same random integer will be used for the entire line of text. Suppose that N1 represents the lowest permissible value in the ASCII code, and N2 represents the highest permissible value. If the number obtained in step 2 above exceeds N2, then subtract the largest possible multiple of N2 from this number, and add the remainder to N1. Hence the encoded number will always fall between N1 and N2, and will therefore always represent some ASCII character. Display the characters that correspond to the encoded ASCII values. The procedure is reversed when decoding a line of text. Be certain, however, that the same random number is used in decoding as was used in encoding.

1 Answers   Amazon, CSJM, HCL, Microsoft, TCS, Wipro,


there is two conditions , 1. while using for loop for printing 1 to 50 no's simulteneous 2. while using printf functios for printing 1 to 50 no's simulteneous with or without using variables who will take more time for compiling and execution? explain in details with reason?

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Write a c program to find, no of occurance of a given word in a file. The word is case sensitive.

2 Answers  






Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

1 Answers   Mind Tree,


1 1 2 1 2 3 1 2 3 4 1 2 3 1 2 1 generate this output using for loop

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write a c program to add two integer numbers without using arithmetic operator +

13 Answers   Value Labs,


Who is the founder of c language?

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how does printf function work

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1. What is the output of printf("%d") 2. What will happen if I say delete this 3. Difference between "C structure" and "C++ structure". 4. Diffrence between a "assignment operator" and a "copy constructor" 5. What is the difference between "overloading" and "overridding"? 6. Explain the need for "Virtual Destructor". 7. Can we have "Virtual Constructors"? 8. What are the different types of polymorphism? 9. What are Virtual Functions? How to implement virtual functions in "C" 10. What are the different types of Storage classes? 11. What is Namespace? 12. What are the types of STL containers?. 13. Difference between "vector" and "array"? 14. How to write a program such that it will delete itself after exectution? 15. Can we generate a C++ source code from the binary file? 16. What are inline functions? 17. Talk sometiming about profiling? 18. How many lines of code you have written for a single program? 19. What is "strstream" ? 20. How to write Multithreaded applications using C++? 21. Explain "passing by value", "passing by pointer" and "passing by reference" 22. Write any small program that will compile in "C" but not in "C++" 23. Have you heard of "mutable" keyword? 24. What is a "RTTI"? 25. Is there something that I can do in C and not in C++? 26. Why preincrement operator is faster than postincrement? 27. What is the difference between "calloc" and "malloc"? 28. What will happen if I allocate memory using "new" and free it using "free" or allocate sing "calloc" and free it using "delete"? 29. What is Memory Alignment? 30. Explain working of printf. 31. Difference between "printf" and "sprintf". 32. What is "map" in STL? 33. When shall I use Multiple Inheritance? 34. What are the techniques you use for debugging? 35. How to reduce a final size of executable? 36. Give 2 examples of a code optimization.

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program to find a smallest number in an array

15 Answers   Microsoft, Sony,


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