Crossword 11

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Across
  1. 3. The library function used to find the last occurrence of a character in a string.
  2. 4. Function used to find the first occurrence of a given string in an another string.
  3. 5. ___ numbers receive most attention in realm of recreational mathematics.(*)
Down
  1. 1. The default constructor has the same ___ as its class.
  2. 2. ___ lets you define new datatypes.