What gets printed when the following expression is evaluated? Select the one correct answer. ${4 div 5}
-
0
-
0.8
-
1
-
-1
In JSP Expression Language (EL), the 'div' operator performs floating-point division, not integer division. The expression ${4 div 5} evaluates to 0.8, not 0. Integer division would use 'mod' or need explicit casting. Option A (0) would be the result of integer division. Option C (1) would be rounding. Option D (-1) has no mathematical basis for this expression.
To answer this question, you need to understand the concept of integer division.
In Python, the division operator (/) returns a floating-point number (decimal number) as the result. However, the integer division operator (//) returns the quotient as an integer.
In the given expression, ${4 div 5}, the div keyword is not a valid operator in Python. Instead, we should use the // operator for integer division.
Let's evaluate the expression using the correct operator:
${4 // 5}
The result of this expression is 0.8. However, since we are using integer division, the decimal part is truncated, and only the integer part is returned.
Therefore, the correct answer is B) 0.8.