Variable declaration reset: Difference between revisions
Added C# example
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}
</syntaxhighlight>
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<pre>
2
5
</pre>
=={{header|C sharp|C#}}==
<syntaxhighlight lang="csharp">
internal class Program
{
private static void Main(string[] args)
{
int[] s = { 1, 2, 2, 3, 4, 4, 5 };
// There is no output as 'prev' is created anew each time
// around the loop and set to zero.
for (int i = 0; i < s.Length; ++i)
{
int curr = s[i];
int prev = 0;
// int prev; // triggers "error: variable prev might not have been initialized"
if (i > 0 && curr == prev)
{
Console.WriteLine(i);
}
prev = curr;
}
int gprev = 0;
// Now 'gprev' is used and reassigned
// each time around the loop producing the desired output.
for (int i = 0; i < s.Length; ++i)
{
int curr = s[i];
if (i > 0 && curr == gprev)
{
Console.WriteLine(i);
}
gprev = curr;
}
}
}
</syntaxhighlight>
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