Inner loop
Definition
An inner loop is a loop that exists within another loop, commonly referred to as the outer loop. The inner loop completes all its iterations for each iteration of the outer loop.
5 Must Know Facts For Your Next Test
- Inner loops execute completely for each single iteration of the outer loop.
- The total number of iterations in nested loops is the product of iterations of both loops.
- Inner loops can access and utilize variables from their own scope as well as from their enclosing outer loops.
- Performance can be significantly impacted by nested loops, especially if both loops have high iteration counts.
- Nested loops are crucial for working with multi-dimensional data structures such as matrices.
Review Questions
- What happens to the inner loop when the outer loop runs multiple iterations?
- How does an inner loop differ in scope and execution compared to an outer loop?
- Why might nested loops affect performance more than single-level loops?
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Related terms
Outer Loop: A loop that contains another (inner) loop within its body.
Iteration: A single pass through the set of instructions in a loop.
Scope: The region or context in which a variable or function is defined and accessible.
