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Categories / C++ / Vector

 

Read data from a file and save that to vector

#include <algorithm> #include <fstream> #include <iomanip> #include <iostream> #include <iterator> #include <numeric> #include <vector> using namespace std; int main( ) {     ifstream stock_file( "data.txt" );     vector<float> price( (istream_iterator<float>( stock_file )),istream_iterator<float>() );     vector<float> percent_change( price.size() );     adjacent_difference( price.begin(), price.end(),percent_change.begin() );     copy( price.begin(), price.begin()+5,ostream_iterator<float>( cout,  "  " ) ); }