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It's not "+cnt+". The parenthesis belong to {0 and } so "{0" and "}". This is concatinating a string that will return {0,cnt}. In the case of the example it would be {0,6}. This right aligns the result in a field of width cnt.
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It's not "+cnt+". The parenthesis belong to {0 and } so "{0" and "}". This is concatinating a string that will return {0,cnt}. In the case of the example it would be {0,6}. This right aligns the result in a field of width cnt.