Understanding C Input and Output

What function is used to read input from the user in C?

• getInput

• readUserInput

• inputReader

• scanf

How do you print a string to the console in C?

• printf("your_string_here\n");

• write(your_string_here);

• cout << your_string_here << endl;

• echo your_string_here;

What is the purpose of the 'scanf' function?

• To write formatted output to the standard output.

• To read formatted input from the standard input.

• To read unformatted input from the standard input.

• To parse command line arguments.

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

• To read input from the user

• To format and output data to the console

• To allocate memory dynamically

• To terminate a program

How can you read an integer input from the user in C?

• int num; read(num);

• int num; scanf('%d', &num);

• int num; input(&num);

• int num; printf('%d', num);

What format specifier is used for floating-point numbers in 'printf'?

• %c

• %d

• %f

• %s

How do you handle multiple inputs in a single 'scanf' call?

• Call 'scanf' multiple times for each input separately.

• Use a single format specifier like 'scanf('%s', strVar);'

• Use 'printf' instead of 'scanf' for input handling.

• Use multiple format specifiers in 'scanf', e.g., 'scanf("%d %f %s", &intVar, &floatVar, strVar);'

What is the difference between 'getchar' and 'scanf'?

• 'getchar' reads multiple characters; 'scanf' reads a single character.

• 'getchar' requires a format specifier; 'scanf' does not.

• 'getchar' is used for reading integers; 'scanf' is used for reading strings.

• 'getchar' reads one character; 'scanf' reads formatted input.

What is the return type of the 'scanf' function?

• void

• int

• char*

• float

Which header file is required to use 'printf' and 'scanf' functions?

• stdio.h

• stdlib.h

• string.h

• math.h