Mega Code Archive
Use for_each with predicate
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#include <iostream>
using std::cout;
using std::endl;
#include <algorithm>
#include <numeric>
#include <vector>
#include <iterator>
void outputSquare( int );
int main()
{
std::ostream_iterator< int > output( cout, " " );
int a2[ 10 ] = { 100, 2, 8, 1, 50, 3, 8, 8, 9, 10 };
std::vector< int > v2( a2, a2 + 10 ); // copy of a2
cout << "Vector v2 contains: ";
std::copy( v2.begin(), v2.end(), output );
// output square of every element in v
cout << "\n\nThe square of every integer in Vector v is:\n";
std::for_each( v2.begin(), v2.end(), outputSquare );
cout << endl;
return 0;
}
void outputSquare( int value )
{
cout << value * value << ' ';
}
/*
Vector v2 contains: 100 2 8 1 50 3 8 8 9 10
The square of every integer in Vector v is:
10000 4 64 1 2500 9 64 64 81 100
*/
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