Final answer:
In the context of programming, declaring and initializing a variable involves two steps: announcing the variable and its type to the system, and then assigning it an initial value.
Step-by-step explanation:
The question relates to the concept of variables in programming, which is part of the Computers and Technology subject, and is typically taught at the High School level. Declaring and initialising a variable consists of two main steps in many programming languages:
- Declaration: You tell the compiler or interpreter that you are going to use a variable by declaring it. This typically involves specifying the type of data the variable will hold.
- Initialization: You assign an initial value to the variable.
Here is an example in the Java programming language:
int age = 18;
In this example, int is the data type, age is the variable name, and 18 is the initial value assigned to the variable.
The correct answer is option char x = 'a';. In this line, we are declaring and initializing a variable called 'x' of type char with the value 'a'. The char data type is used to store a single character, such as a letter, number, or symbol.
Here is an example of how we can use this variable:
char x = 'a';
printf("The value of x is %c", x);
// Output: The value of x is a
In this example, the value of the variable 'x' is printed using the %c format specifier, which is used for characters in printf statement.