1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
|
<HTML>
<HEAD>
<TITLE>array3.cpp</TITLE>
</HEAD>
<BODY TEXT="#000000" BGCOLOR="#FFFFFF">
<TABLE HEIGHT=40 WIDTH="100%">
<TR> <TD ALIGN=LEFT WIDTH="100%" BGCOLOR="#DDDDDD">
<FONT face="Arial,Helvetica" size=+2><B>
array3.cpp
</B></FONT>
</TD></TR></TABLE><BR>
<BR><BR>
<TT>
<SPAN class="Source">
<Font color="0000FF" >/</FONT><I><FONT face="Arial,Helvetica,sans-serif" color="0000FF" >* example for using class array<></FONT></I><BR>
<I><FONT face="Arial,Helvetica,sans-serif" color="0000FF" >*/</FONT></I><BR>
#include <string><BR>
#include <iostream><BR>
#include <<A href="./array.hpp.html">boost/array.hpp</A>><BR>
<BR>
template <class T><BR>
void print_elements (const T& x);<BR>
<BR>
int main()<BR>
{<BR>
<I><FONT face="Arial,Helvetica,sans-serif" color="0000FF" >// create array of four seasons</FONT></I><BR>
boost::array<std::string,4> seasons = {<BR>
{ "spring", "summer", "autumn", "winter" }<BR>
};<BR>
<BR>
<I><FONT face="Arial,Helvetica,sans-serif" color="0000FF" >// copy and change order</FONT></I><BR>
boost::array<std::string,4> seasons_orig = seasons;<BR>
for (unsigned i=seasons.size()-1; i>0; --i) {<BR>
swap(seasons.at(i),seasons.at((i+1)%seasons.size()));<BR>
}<BR>
<BR>
std::cout << "one way: ";<BR>
print_elements(seasons);<BR>
<BR>
<I><FONT face="Arial,Helvetica,sans-serif" color="0000FF" >// try swap()</FONT></I><BR>
std::cout << "other way: ";<BR>
swap(seasons,seasons_orig);<BR>
print_elements(seasons);<BR>
<BR>
<I><FONT face="Arial,Helvetica,sans-serif" color="0000FF" >// try reverse iterators</FONT></I><BR>
std::cout << "reverse: ";<BR>
for (boost::array<std::string,4>::reverse_iterator pos<BR>
=seasons.rbegin(); pos<seasons.rend(); ++pos) {<BR>
std::cout << " " << *pos;<BR>
}<BR>
std::cout << std::endl;<BR>
<BR>
return 0; <I><FONT face="Arial,Helvetica,sans-serif" color="0000FF" >// makes Visual-C++ compiler happy</FONT></I><BR>
}<BR>
<BR>
template <class T><BR>
void print_elements (const T& x)<BR>
{<BR>
for (unsigned i=0; i<x.size(); ++i) {<BR>
std::cout << " " << x[i];<BR>
}<BR>
std::cout << std::endl;<BR>
}<BR>
<BR>
</SPAN>
</TT>
</BODY>
</HTML>
|