Accessing characters in a string : string subscript indexer « string « C++ Tutorial

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C++ Tutorial » string » string subscript indexer

15.5.2.Accessing characters in a string

#include <iostream>

#include <string>

#include <cctype>

using std::cout;

using std::cin;

using std::endl;

using std::string;



int main() {

  string text = "asdffdsaasdf";





  int vowels = 0;              

  int consonants = 0;          

  for(int i = 0 ; i < text.length() ; i++)

    if(std::isalpha(text[i]))  

      switch(std::tolower(text[i])) {

        case 'a': case 'e': case 'i':

        case 'o': case 'u':

          vowels++;

          break;

        default:

          consonants++;

      }



  cout << "Your input contained "

       << vowels     << " vowels and "

       << consonants << " consonants."

       << endl;



  return 0;

}

Your input contained 3 vowels and 9 consonants.

15.5.string subscript indexer
	15.5.1.	Modify char in a string by indexer
	15.5.2.	Accessing characters in a string
	15.5.3.	switch statement based on char value
	15.5.4.	accessing characters in string objects
	15.5.5.	Is it a string::npos

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