#include <sstream>
#include <cassert>
int main()
{
{
std::ostringstream ss(" 123 456");
assert(ss.rdbuf() != 0);
assert(ss.good());
assert(ss.str() == " 123 456");
int i = 234;
ss << i << ' ' << 567;;
assert(ss.str() == "234 5676");
}
{
std::ostringstream ss(" 123 456", std::ios_base::in);
assert(ss.rdbuf() != 0);
assert(ss.good());
assert(ss.str() == " 123 456");
int i = 234;
ss << i << ' ' << 567;;
assert(ss.str() == "234 5676");
}
{
std::wostringstream ss(L" 123 456");
assert(ss.rdbuf() != 0);
assert(ss.good());
assert(ss.str() == L" 123 456");
int i = 234;
ss << i << ' ' << 567;;
assert(ss.str() == L"234 5676");
}
{
std::wostringstream ss(L" 123 456", std::ios_base::in);
assert(ss.rdbuf() != 0);
assert(ss.good());
assert(ss.str() == L" 123 456");
int i = 234;
ss << i << ' ' << 567;;
assert(ss.str() == L"234 5676");
}
}