C Programming.

1. Computer Programming 2. History of Prog.Language 3. Introduction to C 4. Features of C 5. Starting Turbo C 6. C Tokens 7. Basic requirement of C 8. Comments 9. My First Program in C 10. Line Break 11. C Escape Sequence 12. Constants or Literals 13. Variables in C 14. Data Types in C 15. Range of Data Types in C 16. Declare Variables 17. Reserved Key Words 18. printf( ) statement 19. Chained & Embedded state 20. Prog.to print sum of 2 nos 21. scanf( ) stament 22. print sum & average 23. print Area of Rectangle 24. Area & Circumference of Circle 25. Prg.for Simple Calculator 26. Operators in C 27. Ex. Of Operators 28. Swap two numbers 29. Hierarchy of Operators 30. if( ) statement 31. Prg.to check +ve,-ve or zero 32. if..else statement 33. Prg.to check Odd or Even 34. Prg.to print larger of 2 nos 35. Prg.to print largest of 3 nos 36. Prg.to check divisibility 37. Prg.to check print range 38. for. . . loop statement 39. prg.to print series of nos 40. Prg.to check divisibility 41. prg.to print sum of nos 42. Prg.to print Pyramid 43. prg.for Factorial 44. prg.to fill screen 45. prg.for largest/smallest no 46. prg.to print reverse no 47. prg.to add each digit 48. prg.for sum of factorial 49. prg.for fibonacci series 50. prg.to check Prime nos 51. prg. Prime no from 1 to 100 52. prg.Specified Prime nos 53. while( ) statement 54. do. . While statement 55. goto statement 56. break & continue state. 57. switch case statement 58. Array in C 59. Reverse order using array 60. Ascending/Descending order 61. prg.to search no in Array 62. Double Dimension Array 63. String in C 64. String with spaces in C 65. Print string in reverse 66. prg.to count A,E,I,O,U vowel 67. Function( ) in C 68. Function program examples 69. General Purpose Programs 70. Loan & EMI calculation prg. 71. Table print prg. 72. Leap year program 73. lower to UPPER case prg. 74. Frequency Distribution prg. 75. Bank note calculation prg. 76. Simple Interest prg. 77. Compound Interest prg. 78. Simple Depreciation prg. 79. Reducing bal.Depreciation 80. Marksheet prg. 81. Income Tax prg. 82. Time calculator prg. 83. Distance converter prg. 84. Volume Air Calculation 85. Time to fill Water Tank 86. Salary Calculation prg. 87. Total Sale Calculation prg. 88. Male/Female percentage prg. 89. Library Rent prg. 90. Office Expance prg. 91. Total Salary Calculation prg. 92. Profit or Loss prg. 93. Total Profit/Loss prg. 94. Convert Amt to Word. 95. ASCII Table 96. C Operators 97. C & C++ Reserved Keyword 98. C & C++ Pre-Define Function 99. C Interview Part1 100. C Interview Part2 101. C Interview Part3 102. C Interview Part4 103. C Interview Part5 104. C Interview Part6 105. C Interview Part7 106. C Interview Part8 107. C Interview Part9 108. C Interview Part10 109. C Interview Part11
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C Programming Interview Questions and Answers Part 9


81.What is copy constructor?

  • Copy constructor is a constructor function with the same name as the class and used to make deep copy of objects.


82.What is the difference between #include‹ › and #include “ ”?

  • #include‹ › ----> Specifically used for built in header files.

  • #include “ ” ----> Specifically used for used for user defined/created n header file.


83.What are the features of C Langauges?

  • In C one can write programs like that of high level languages as in COBOL, BASIC, FORTRAN etc. as well as it permits very close interaction with the inner workings of the computer.

  • It is a general purpose programming language.

  • It is usually called system programming language but equally suited to writing a variety of applications.

  • It supports various data types

  • It follows the programming style based on fundamental control flow constructions for structured programming

  • Functions may be pre–defined or user defined and they may return values of basic types, structures, unions or pointers.



84.What is the difference between a string copy (strcpy) and a memory copy (memcpy)?

  • The strcpy() function is designed to work exclusively with strings.

  • It copies each byte of the source string to the destination string and stops when the terminating null character () has been moved.

  • On the other hand, the memcpy() function is designed to work with any type of data.

  • Because not all data ends with a null character, you must provide the memcpy() function with the number of bytes you want to copy from the source to the destination.


85.What is the difference between a NULL Pointer and a NULL Macro?

  • Null pointer is a pointer that is pointing nothing while NULL macro will used for replacing 0 in program as #define NULL 0 .


86.What is the difference between const char*p and char const* p?

  • const char*p - p is pointer to the constant character. i.e value in that address location is constant.

  • const char* const p - p is the constant pointer which points to the constant string, both value and address are constants.


87.What is the purpose of realloc()?

  • Realloc(ptr,n) function uses two arguments.

  • The first argument ptr is a pointer to a block of memory for which the size is to be altered.

  • The second argument n specifies the new size.The size may be increased or decreased.


88.What is a pointer value and address?

  • A pointer value is a data object that refers to a memory location.

  • Each memory location is numbered in the memory.

  • The number attached to a memory location is called the address of the location.


89.What is the use of typedef?

  • The typedef help in easier modification when the programs are ported to another machine.

  • A descriptive new name given to the existing data type may be easier to understand the code.


90.What are the differences between new and malloc?

  • new initializes the allocated memory by calling the constructor.

  • Memory allocated with new should be released with delete.

  • malloc allocates uninitialized memory.

  • The allocated memory has to be released with free. new automatically calls the constructor while malloc(dosen’t)

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