question What is the purpose of the union keyword in C

Programming

What is the purpose of the 'union' keyword in C?

A. Combine two arrays
B. Combine two structures
C. Combine two functions
D. Combine two variables

'union' is used to combine two or more structures in C.

How do you close a file in C?

A. close(file);
B. fclose(file);
C. file.close();
D. endfile(file);

What is the role of the 'strcpy' function in C?

A. Concatenate strings
B. Copy strings
C. Compare strings
D. Convert strings

How do you define a multi-line macro in C?

A. #define MACRO_NAME() { }
B. #define MACRO_NAME { }
C. #macro MACRO_NAME { }
D. #macro MACRO_NAME() { }

What is the purpose of the 'fgets' function in C?

A. Read a character
B. Read a string
C. Read an integer
D. Read a float

How do you declare a function pointer in C?

A. int (*funcPtr)();
B. int funcPtr();
C. (*int funcPtr)();
D. int *funcPtr();

What is the output of printf("%d", ~5);?

A. -6
B. 5
C. 6
D. -5

What is the output of printf("%c", 65);?

A. A
B. B
C. 65
D. 66

What is the purpose of the 'strcmp' function in C?

A. Concatenate strings
B. Copy strings
C. Compare strings
D. Convert strings

How do you declare a dynamic array in C?

A. int arr[];
B. int arr[10];
C. int *arr = malloc(10 * sizeof(int));
D. int arr[10] = new int[10];

How do you create a thread in Java?

A. Using the run() method
B. Extending the Thread class
C. Implementing the Runnable interface
D. Both B and C