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 7


61.Can a Structure contain a Pointer to itself?

  • Yes such structures are called self-referential structures.


62.What is the difference between array and pointer?

  • Array:

    1. Array allocates space automatically.

    2. It cannot be resized

    3. It cannot be reassigned.

    4. size of (arrayname) gives the number of bytes occupied by the array.


  • Pointer:

    1. Explicitly assigned to point to an allocated space.

    2. It can be sized using realloc() 3-pointer can be reassigned.

    3. sizeof (p) returns the number of bytes used to store the pointer variable p.


63.What is the difference between syntax vs logical error?

  • Syntax Error:

    1. These involves validation of syntax of language.

    2. compiler prints diagnostic message.

  • Logical Error:

    1. logical error are caused by an incorrect algorithm or by a statement mistyped in such a way that it doesn’t violet syntax of language difficult to find.


64.What is preincrement and post increment?

  • ++n (pre increment) increments n before its value is used in an assignment operation or any expression containing it. n++ (post increment) does increment after the value of n is used.


65.What are the two forms of #include directive?

  • #include“filename”

  • #include - the first form is used to search the directory that contains the source file.

  • If the search fails in the home directory it searches the implementation defined locations.

  • In the second form ,the preprocessor searches the file only in the implementation defined locations.


66.What is the difference between the functions memmove() and memcpy()?

  • The arguments of memmove() can overlap in memory. The arguments of memcpy() cannot.


67.what is a stream?

  • A stream is a source of data or destination of data that may be associated with a disk or other I/O device.

  • The source stream provides data to a program and it is known as input stream.

  • The destination stream eceives the output from the program and is known as output stream.


68.What is meant by file opening?

  • The action of connecting a program to a file is called opening of a file.

  • This requires creating an I/O stream before reading or writing the data.


69.What is a file pointer?

  • The pointer to a FILE data type is called as a stream pointer or a file pointer.

  • A file pointer points to the block of information of the stream that had just been opened.


70.What are the advantages of using array of pointers to string instead of an array of strings?

  • Efficient use of memory.

  • Easier to exchange the strings by moving their pointers while sorting.

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