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Summary

  • Header files are component files of standard library
  • There are many functions available. They are math function, string function, character functions etc.
  • Isalnum() functions is a character function and it checks whether its argument is alphanumeric.
  • Isdigit() functions is a character function and it checks whether its argument is digital or not.
  • rand(), srand(), random() and randomize are the functions used for generating random numbers.




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