#include
#include
#include
using namespace std;
template
void print(T& c){
for( typename T::iterator i = c.begin(); i != c.end(); i++ ){
std::cout << *i << endl;
}
}
void doubler( int a[], int length ){
for( int i = 0; i < length; ++i )
a[i] *= 2;
}
int main( ){
vector data( 5, 1 );
partial_sum( data.begin(), data.end(), data.begin() );
print( data );
if( !data.empty() ) {
doubler( &data[0], static_cast( data.size() ) );
print( data );
}
}