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Maarten De Kruif
7,314 PointsRepeatdetector
Not All code paths return a value?
namespace Treehouse.CodeChallenges
{
class SequenceDetector
{
public virtual bool Scan(int[] sequence)
{
return true;
}
}
}
namespace Treehouse.CodeChallenges
{
class RepeatDetector:SequenceDetector
{
public override bool Scan(int[] sequence)
{
int previous = 0;
for(int i=1;i<=sequence.Length;i++)
{
int current=sequence[i];
if(previous==current)
{
return true;
}
previous=sequence[i];
}
}
}
}
2 Answers
Allan Clark
10,810 PointsYour only return statement is enclosed in an if statement, so should the if statement be skipped bc it evaluates to false, there is no return statement for the method to execute. Adding 'return false;' just after you're for loop should work. this will guarantee that if it goes all the way through the loop without returning, it will always return false.
Steven Parker
231,248 PointsAnytime you return a value inside a conditional, you should also do so after the conditional.
In this case it would also be after the loop. The compiler can tell that if the condition never passes, the method will also not return a bool value as promised by the declaration. So the last statement of the method should be "return false;".