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make_pair
function template
<utility>
template <class T1, class T2> pair<T1,T2> make_pair (T1 x, T2 y);
Construct pair object
Constructs a pair object with its first element set to x and its second element set to y.
The types for the pair class are implicitly deduced from the arguments passed to make_pair.
pair objects can be copy-constructed from other pair objects containing different types, if the respective types are implicitly convertible.
The function is defined as:
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template <class T1,class T2>
pair<T1,T2> make_pair (T1 x, T2 y)
{
return ( pair<T1,T2>(x,y) );
}
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Parameters
- x, y
- Values for the elements first and second, respectively, of the pair object being constructed.
Return value
A pair object whose template paramenters are deduced from the arguments passed to the function, and whose elements first and second are set to them.
Example
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#include <iostream>
#include <utility>
using namespace std;
int main () {
pair <int,int> one;
pair <int,int> two;
one = make_pair (10,20);
two = make_pair (10.5,'A'); // ok: implicit conversion from pair<double,char>
cout << "one: " << one.first << ", " << one.second << "\n";
cout << "two: " << two.first << ", " << two.second << "\n";
return 0;
}
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Output:
See also
| pair | Pair of values (class template) |
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