Basic C Programming - scanf

What is the purpose of scanf function in C programming?

• To read formatted input from the standard input stream and store the data into variables.

• To write data to a file

• To display output on the console

• To perform mathematical calculations

How do you read an integer using scanf?

• %f

• %s

• %d

• %c

What are the different data types that can be read using scanf?

• int, float, double, char, string

• boolean

• object

• array

How can you handle errors while using scanf?

• Ignore any errors and continue with the program execution

• Use printf instead of scanf to avoid errors

• Check the return value of scanf to ensure the expected number of inputs were successfully read and handle errors accordingly.

• Manually handle errors by terminating the program

What happens if the data type specified in scanf does not match the input value?

• The input value will be ignored and the program will continue execution

• Incorrect data may be stored in the variable leading to unexpected behavior, errors, or crashes.

• The program will automatically convert the input value to match the specified data type

• The program will prompt the user to re-enter the correct data type

What is the format specifier for reading a float value using scanf?

• %s

• %d

• %f

• %c

Explain the usage of %c format specifier in scanf.

• It reads a floating-point number input from the standard input stream.

• It reads a string input from the standard input stream.

• It reads an integer input from the standard input stream.

• It reads a single character input from the standard input stream and assigns it to the specified character variable.

How can you read a string with spaces using scanf?

• %c

• %s

• %d

• %[^ ]

What is the significance of & symbol in scanf function?

• It is used to divide variables in the scanf function.

• It is used to multiply variables in the scanf function.

• It is used to add variables in the scanf function.

• It is used to separate the variables in the scanf function.

How can you read multiple values in a single scanf statement?

• By separating values with commas

• By enclosing values in curly braces

• By using the '&&' operator between values

• By specifying the format string to match the input values, such as '%d %d' for two integers.