nonmember_swap.pass.cpp [plain text]
#include <fstream>
#include <cassert>
int main()
{
char temp1[L_tmpnam], temp2[L_tmpnam];
tmpnam(temp1);
tmpnam(temp2);
{
std::ofstream fs1(temp1);
std::ofstream fs2(temp2);
fs1 << 3.25;
fs2 << 4.5;
swap(fs1, fs2);
fs1 << ' ' << 3.25;
fs2 << ' ' << 4.5;
}
{
std::ifstream fs(temp1);
double x = 0;
fs >> x;
assert(x == 3.25);
fs >> x;
assert(x == 4.5);
}
remove(temp1);
{
std::ifstream fs(temp2);
double x = 0;
fs >> x;
assert(x == 4.5);
fs >> x;
assert(x == 3.25);
}
remove(temp2);
{
std::wofstream fs1(temp1);
std::wofstream fs2(temp2);
fs1 << 3.25;
fs2 << 4.5;
swap(fs1, fs2);
fs1 << ' ' << 3.25;
fs2 << ' ' << 4.5;
}
{
std::wifstream fs(temp1);
double x = 0;
fs >> x;
assert(x == 3.25);
fs >> x;
assert(x == 4.5);
}
remove(temp1);
{
std::wifstream fs(temp2);
double x = 0;
fs >> x;
assert(x == 4.5);
fs >> x;
assert(x == 3.25);
}
remove(temp2);
}