Variables and Data Types in C

Which of the following are correct?

• Variables are empty spaces in memory used to store data

• Examples of variables are 3num, $%date&time, 2age

• Variable names should be concise and relate to the data that they are storing

• When declaring variables, the data type is placed AFTER the variable name and not before

Which of the following are data types in C?

• Float, data/time, int

• Char, int, float, double

• string, double, floater

• Char, array, integer

Answer explanation

Which of the following data can a variable declared as 'int' store?

• 2.55

• 0

• 30.0

• 30

TRUE OR FALSE?

The printf function is used to INPUT data while the scanf function is used to OUTPUT data

• TRUE

• FALSE

What are the format identifiers for the data types int, char and string respectively?

• %d, %c, %lf

• %s, %f, %d

• %d, %c, %s

• %f, %lf, %s

What is the correct format for declaring a variable that stores integers?

• variable_name, data_type, = 0;

• data_type, variable_name, = 0;

• =0;, variable_name, data_type

• data_type, =0;, variable_name

True or False? The float data type in C can store the numbers 31.0 and 31.678

• FALSE

• TRUE

You are provided with the following:

Data type is int

Variable name is sum

Starting value/initializer is set at 1

Use what was provided to perform a declaration

Hint: Remember to put the semi-colon at the end (;)