41. How do you allocate memory dynamically in C?
42. What is the purpose of the malloc function?
43. How do you free dynamically allocated memory in C?
44. What is a file in C?
45. How do you open a file in C?
46. Explain the difference between text files and binary files.
47. How do you read data from a file in C?
48. What is the purpose of the fopen function?
49. How do you close a file in C?
50. What is error handling in C?
51. What is the use of the errno variable?
52. How do you use if statements in C?
53. Explain the use of else and else if.
54. What are switch statements in C?
55. How do you create loops in C?
56. What is the difference between for, while, and do-while loops?
57. How do you break out of a loop in C?
58. What is the purpose of the break statement?
59. Explain the use of the continue statement.
60. What are nested loops in C?
61. How do you create a simple program to add two numbers?
62. What is a syntax error?
63. How do you handle syntax errors in C?
64. What is a semantic error?
65. What is the difference between an error and an exception?
66. How do you use the sizeof operator?
67. What is typecasting in C?
68. How do you convert one data type to another?
69. What are enumerations in C?
70. How do you define an enumeration?
71. What is the purpose of the const keyword?
72. How do you create multi-dimensional arrays in C?
73. What is the difference between a constant and a variable?
74. How do you use the switch statement to perform different actions?
75. What is a macro in C?
76. How do you define a macro using #define?
77. What is the purpose of header files in C?
78. How do you create a custom header file?
79. What is the difference between #include and #define?
80. What are inline functions in C?