# Man Page max.3

```
Standard C++ Library
Copyright 1998, Rogue Wave Software, Inc.

```

## NAME

```     max

- Finds and returns the maximum of a pair of values.

```

## SYNOPSIS

```     #include <algorithm>
template <class T>
const T& max(const T&, const T&);

template <class T, class Compare>
const T& max(const T&, const T&, Compare);

```

## DESCRIPTION

```     The_max algorithm determines and returns the  maximum  of  a
pair of values. The optional argument Compare defines a com-
parison function that can be used in place  of  the  default
operator<.

max returns the first argument when the arguments are equal.

```

## EXAMPLE

```     //
// max.cpp
//
#include <algorithm>
#include <iostream>
#include <iostream>
using namespace std;

int main(void)
{
double d1 = 10.0, d2 = 20.0;

// Find minimum
double val1 = min(d1, d2);
// val1 = 10.0

// the greater comparator returns the greater of the
// two values.
double val2 = min(d1, d2, greater<double>());
// val2 = 20.0;

// Find maximum
double val3 = max(d1, d2);
// val3 = 20.0;

// the less comparator returns the smaller of
// the two values.
// Note that, like every comparison in the STL, max is
// defined in terms of the < operator, so using less here
// is the same as using the max algorithm with a default
// comparator.
double val4 = max(d1, d2, less<double>());
// val4 = 20

cout << val1 << " " << val2 << " "
<< val3 << " " << val4 << endl;

return 0;
}

Program Output

10 20 20 20

```

```     max_element, min, min_element

```