Mega Code Archive
Use istream_iterator and ostream_iterator to read from cin and write to cout
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#include <iostream>
#include <iterator>
#include <string>
#include <vector>
using namespace std;
int main()
{
unsigned i;
double d;
string str;
vector<int> vi;
vector<double> vd;
vector<string> vs;
cout << "Enter some integers, enter 0 to stop.\n";
istream_iterator<int> int_itr(cin);
do {
i = *int_itr;
if(i != 0) {
vi.push_back(i);
++int_itr;
}
} while (i != 0);
cout << "Enter some doubles, enter 0 to stop.\n";
istream_iterator<double> double_itr(cin);
do {
d = *double_itr;
if(d != 0.0) {
vd.push_back(d);
++double_itr;
}
} while (d != 0.0);
cout << "Enter some strings, enter 'quit' to stop.\n";
istream_iterator<string> string_itr(cin);
do {
str = *string_itr;
if(str != "quit") {
vs.push_back(str);
++string_itr;
}
} while (str != "quit");
cout << endl;
cout << "Here is what you entered:\n";
for(i=0; i < vi.size(); i++) cout << vi[i] << " ";
cout << endl;
for(i=0; i < vd.size(); i++) cout << vd[i] << " ";
cout << endl;
for(i=0; i < vs.size(); i++) cout << vs[i] << " ";
// Now, use ostream_iterator to write to cout.
// Create an output iterator for string.
ostream_iterator<string> out_string_itr(cout);
*out_string_itr = "\n";
*out_string_itr = string("\nThis is a string\n");
*out_string_itr = "This is too.\n";
// Create an output iterator for int.
ostream_iterator<int> out_int_itr(cout);
*out_int_itr = 10;
*out_string_itr = " ";
*out_int_itr = 15;
*out_string_itr = " ";
*out_int_itr = 20;
*out_string_itr = "\n";
// Create an output iterator for bool.
ostream_iterator<bool> out_bool_itr(cout);
*out_bool_itr = true;
*out_string_itr = " ";
*out_bool_itr = false;
return 0;
}
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