goType errorEasy

Integer division truncates rate calculation

Time: 0:00

BugFind the bug and fix the code

What it should do

Calculate percentage ratio of part to whole. Example: calculateRatioPercent(1, 4) -> 25.0

What happens instead

Function returns 0.0 instead of expected 25.0

package main

import "fmt"

func calculateRatioPercent(part int, whole int) float64 {
	if whole == 0 {
		return 0.0
	}
	return float64(part / whole) * 100.0
}

func main() {
	fmt.Println(calculateRatioPercent(1, 4))
}

Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).

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This bug belongs to the type errors pattern

Totals that concatenate, sorts that put 10 before 9, comparisons that refuse to run.

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package main import "fmt" func calculateRatioPercent(part int, whole int) float64 { if whole == 0 { return 0.0 } return float64(part / whole) * 100.0 } func main() { fmt.Println(calculateRatioPercent(1, 4)) }

Integer division truncates rate calculation

What it should do

What happens instead

More type errors to practise

Integer division truncates rate calculation

What it should do

What happens instead

More type errors to practise