Completion requirements
Read this chapter, which covers variables and arithmetic operations and order precedence in Java.
10. Assignment Statement Syntax
Answer:
The variable contains: 123
The program prints out the same thing as the first example program. However, this program did not
initialize the variable and so had to put a value into it later.
Assignment Statement Syntax
Assignment statements look like this:
variableName = expression ;
- The equal sign
=
is the assignment operator. - variableName is the name of a variable that has been declared previously in the program.
- expression is a collection of characters that calls for a value to be calculated.
Here are some example assignment statements (assume that the variables have already been declared):
total = 3 + 5;
price = 34.56;
tax = total*0.05;
In the source file, the variable must be declared before any assignment statement that uses that variable.
Question 11:
Is the following correct?
int sum;
sum = 42 - 12 ;