Contents
This paper answers the following questions - - 1. What does static variable mean?
- 2. What is a pointer?
- 3. What are the uses of a pointer?
- 4. What is a structure?
- 5. What is a union?
- 6. What are the differences between structures and union?
- 7. What are the differences between structures and arrays?
- 8. In header files whether functions are declared or defined?
- 9. What are the differences between malloc () and calloc ()?
- 10. What are macros? What are its advantages and disadvantages?
- 11. Difference between pass by reference and pass by
- 12. What is static identifier?
- 13. Where is the auto variables stored?
- 14. Where does global, static, and local, register
- 15. Difference between arrays and linked list?
- 16. What are enumerations?
- 17. Describe about storage allocation and scope of
- 18. What are register variables? What are the advantages
- 19. What is the use of typedef?
- 20. Can we specify variable field width in a scanf()
- 21. Out of fgets() and gets() which function is safe to use and why?
- 22. Difference between strdup and strcpy?
- 23. What is recursion?
- 24. Differentiate between a for loop and a while loop? What are it uses?
- 25. What is storage class.What are the different storage classes in C?
- 26. What the advantages of using Unions?
- 27. What is the difference between Strings and Arrays?
- 28. What is a far pointer? where we use it?
- 29. What is a huge pointer?
- 30. What is a normalized pointer ,how do we normalize a pointer?
- 31. What is near pointer.
- 32. In C, why is the void pointer useful? When would you use it?
- 33. What is a NULL Pointer? Whether it is same as an uninitialized pointer?
- 34. Are pointers integer ?
- 35. What does the error ‘Null Pointer Assignment’ means and what causes this error?
- 36. What is generic pointer in C?
- 37. Are the expressions arr and &arr same for an array of integers?
- 38. How pointer variables are initialized ?
- 39. What is static memory allocation ?
- 40. What is dynamic memory allocation?
- 41. What is the purpose of realloc ?
- 42. What is pointer to a pointer.
- 43. What is an array of pointers ?
- 44. Difference between linker and linkage ?
- 45. Is it possible to have negative index in an array?
- 46. Why is it necessary to give the size of an array in an array declaration ?
- 47. What modular programming ?
- 48. What is a function ?
- 49. What is an argument ?
- 50. What are built in functions ?
- 51. Difference between formal argument and actual argument ?
- 52. Is it possible to have more than one main() function in a C program ?
- 53. What is the difference between an enumeration and a set of pre-processor # defines?
- 54. How are Structure passing and returning implemented by the complier?
- 55. What is the similarity between a Structure, Union and enumeration?
- 56. Can a Structure contain a Pointer to itself?
- 57. How can we read/write Structures from/to data files?
- 58. Write a program which employs Recursion ?
- 59. Write a program which uses Command Line Arguments?
- 60. Difference between array and pointer ?
- 61. What do the ‘c’ and ‘v’ in argc and argv stand for?
- 62. What are C tokens ?
- 63. What are C identifiers?
- 64. Difference between syntax vs logical error?
- 65. What is preincrement and post increment ?
- 66. Write a program to interchange 2 variables without using the third one.
- 67. What is the maximum combined length of command line arguments including the space between adjacent arguments?
- 68. What are bit fields? What is the use of bit fields in a Structure declaration?
- 69. What is a preprocessor, What are the advantages of preprocessor ?
- 70. What are the facilities provided by preprocessor ?
- 71. What are the two forms of #include directive ?
- 72. How would you use the functions randomize() and random()?
- 73. What do the functions atoi(), itoa() and gcvt() do?
- 74. How would you use the functions fseek(), freed(), fwrite() and ftell()?
- 75. What is the difference between the functions memmove() and memcpy()?
- 76. What is a file ?
- 77. What are the types of file?
- 78. What is a stream ?
- 79. What is meant by file opening ?
- 81. What is a file pointer ?
- 82. How is fopen()used ?
- 83. How is a file closed ?
- 84. What is a random access file ?
- 85. What is the purpose of ftell ?
- 86. What is the purpose of rewind() ?
- 87. Difference between a array name and a pointer variable ?
- 88. Represent a two-dimensional array using pointer ?
- 89. Difference between an array of pointers and a pointer to an array ?
- 90. Can we use any name in place of argv and argc as command line arguments ?
- 91. What are the pointer declarations used in C?
- 92. Differentiate between a constant pointer and pointer to a constant ?
- 93. Is the allocated space within a function automatically deallocated when the function returns?
- 94. Discuss on pointer arithmetic?
- 95. What are the invalid pointer arithmetic ?
- 96. What are the advantages of using array of pointers to string instead of an array of strings?
- 97. Are the expressions *ptr ++ and ++ *ptr same ?
- 98. What would be the equivalent pointer expression foe referring the same element as a[p][q][r][s] ?
- 99. Are the variables argc and argv are always local to main ?
- 100. Can main () be called recursively?
Description
Basics of 'C' programming language is explained in an easy way. By reading this quick guide one can become a great programmer in C within 2 days.
