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 10


91.What is the difference between strdup and strcpy?

  • Both copy a string. strcpy wants a buffer to copy into. strdup allocates a buffer using malloc().

  • Unlike strcpy(), strdup() is not specified by ANSI.


92.What is this pointer?

  • It is a pointer that points to the current object.

  • This can be used to access the members of the current object with the help of the arrow operator.


93.What is friend function?

  • The function declaration should be preceded by the keyword friend.

  • The function definitions does not use either the keyword or the scope operator

  • The functions that are declared with the keyword friend as friend function.

  • Thus, a friend function is an ordinary function or a member of another class.


94.What is recursion?

  • A recursion function is one which calls itself either directly or indirectly it must halt at a definite point to avoid infinite recursion.


95.What are the characteristics of arrays in C?

  • An array holds elements that have the same data type.

  • Array elements are stored in subsequent memory locations

  • Two-dimensional array elements are stored row by row in subsequent memory locations.

  • Array name represents the address of the starting element


96.What is the differentiate between for loop and a while loop? What are it uses?

  • For executing a set of statements fixed number of times we use for loop while when the number of iterations to be performed is not known in advance we use while loop.


97.What is the difference between printf(...) and sprintf(...)?

  • printf(....) -------------> is standard output statement

  • sprintf(......)-----------> is formatted output statement.


98.What is an explicit constructor?

  • A conversion constructor declared with the explicit keyword.

  • The compiler does not use an explicit constructor to implement an implied conversion of types.

  • Itís purpose is reserved explicitly for construction.

  • Explicit constructors are simply constructors that cannot take part in an implicit conversion.



99.What are the pointer declarations used in C?

  • Array of pointers, e.g , int *a[10]; Array of pointers to integer

  • Pointers to an array,e.g , int (*a)[10]; Pointer to an array of into

  • Function returning a pointer,e.g, float *f( ) ; Function returning a pointer to float

  • Pointer to a pointer ,e.g, int **x; Pointer to apointer to int

  • pointer to a data type ,e.g, char *p; pointer to char


100.What is the invalid pointer arithmetic?

  • adding ,multiplying and dividing two pointers.

  • Shifting or masking pointer.

  • Addition of float or double to pointer

  • Assignment of a pointer of one type to a pointer of another type

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