ch2-GetWords (Break file into words)

Chapter_2     Exercise_2-2     Fillvector

Exercise_2-3

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GetWords.cpp     TCP1, p. 117         download

// Break a file into whitespace-separated words
#include <string>
#include <iostream>
#include <fstream>
#include <vector>
using std::cout;
using std::endl;
using std::string;
using std::vector;
using std::ifstream;

int main()
{
vector<string> words;
ifstream in("GetWords.cpp");
string word;

while(in >> word)
{words.push_back(word);}

int size = words.size();
for(int i = 0; i < size; i++)
{cout << words[i] << endl;} // one word per line
}
/*
g++ GetWords.cpp -o GetWords
./GetWords
*/

Note:

We can also iterate the vector with the for-each_syntax:
for (string word : words) // for all strings in vector<string> words
{cout << word << endl;} // one word per line
In this case, we no longer need the size variable:
int size = words.size();

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Chapter_2     Exercise_2-2     Fillvector

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