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function LowerToUpper(charInput) {
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  console.log(
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    charInput === charInput.toUpperCase() ? "upper-case" : "lower-case"
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  );
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//   if (charInput === charInput.toUpperCase()) {
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//     console.log("upper-case");
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//   } else {
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//     console.log("lower-case");
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//   }
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}
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LowerToUpper("L");
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LowerToUpper("f");
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