Programming in C

1 String LengthLevel 1 · strings Not started 2 Copy StringLevel 1 · strings Not started 3 Concatenate StringsLevel 1 · strings Not started 4 To UppercaseLevel 1 · strings Not started 5 To LowercaseLevel 1 · strings Not started 6 Count VowelsLevel 1 · strings Not started 7 Count DigitsLevel 1 · strings Not started 8 Reverse StringLevel 1 · strings Not started 9 Is PalindromeLevel 1 · strings Not started 10 Count UppercaseLevel 1 · strings Not started 11 First OccurrenceLevel 1 · strings Not started 12 Remove DigitsLevel 1 · strings Not started 13 Count ConsonantsLevel 1 · strings Not started 14 Toggle CaseLevel 1 · strings Not started 15 Sort CharacterLevel 1 · strings Not started 16 Remove DuplicatesLevel 1 · strings Not started 17 Most FrequentLevel 1 · strings Not started 18 Replace First VowelLevel 1 · strings Not started 19 Double CharLevel 1 · strings Not started 20 Remove CharLevel 1 · strings Not started 21 Rotate LeftLevel 1 · strings Not started 22 Valid EmailLevel 1 · strings Not started 23 Caesar CipherLevel 1 · strings Not started