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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2026 Richard QIn
*/
#ifndef _IOSTREAM
#define _IOSTREAM
#include "stdio.h"
namespace std
{
class ostream
{
private:
FILE* _stream;
public:
ostream(FILE* f) : _stream(f) {}
ostream& operator<<(const char* str)
{
fprintf(_stream, "%s", str);
return *this;
}
ostream& operator<<(int n)
{
fprintf(_stream, "%d", n);
return *this;
}
ostream &operator<<(long n)
{
fprintf(_stream, "%ld", n);
return *this;
}
ostream &operator<<(long long n)
{
fprintf(_stream, "%lld", n);
return *this;
}
ostream &operator<<(double f)
{
fprintf(_stream, "%f", f);
return *this;
}
ostream &operator<<(char c)
{
fputc(c, _stream);
return *this;
}
ostream &operator<<(void *p)
{
fprintf(_stream, "%p", p);
return *this;
}
ostream &operator<<(ostream &(*func)(ostream &))
{
return func(*this);
}
ostream &flush()
{
fflush(_stream);
return *this;
}
};
class istream{
private:
FILE* _stream;
public:
istream(FILE *f) : _stream(f) {}
istream& operator>>(int n)
{
fscanf(_stream, "%d", n);
return *this;
}
istream &operator>>(double &f)
{
fscanf(_stream, "%lf", &f);
return *this;
}
istream &operator>>(char *str)
{
fscanf(_stream, "%s", str);
return *this;
}
istream &operator>>(char &c)
{
char tmp[2];
fscanf(_stream, " %c", tmp);
c = tmp[0];
return *this;
}
};
inline ostream &endl(ostream &os)
{
os << '\n';
os.flush();
return os;
}
}
#endif
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