If a = 5 and b = 2, what is the value of a / b + a % b?
Understand the Problem
The question asks to evaluate the expression a / b + a % b given a = 5 and b = 2. This involves integer division and the modulo operation.
Answer
3
Answer for screen readers
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Steps to Solve
- Substitute the values of a and b into the expression
Replace $a$ with 5 and $b$ with 2 in the expression $a / b + a % b$. This gives us $5 / 2 + 5 % 2$.
- Evaluate the integer division
Perform the integer division $5 / 2$. Integer division means we only keep the whole number part of the result. $5 / 2 = 2$
- Evaluate the modulo operation
The modulo operation $5 % 2$ finds the remainder when 5 is divided by 2. $5 % 2 = 1$
- Add the results
Add the results from the integer division and the modulo operation: $2 + 1 = 3$
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More Information
The modulo operator is very useful in programming! Computer Scientists use it to perform many tasks like ensuring an index stays within the bounds of an array.
Tips
A common mistake is to perform regular division instead of integer division for the $a / b$ part. Remember integer division only keeps the whole number. For example $5/2 = 2.5$, but with integer division $5/2 = 2$. Another common mistake is confusing the division and modulo operators.
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