Mega Code Archive
Locate first occurrence of a value in a vector
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#include <iostream>
using std::cout;
using std::endl;
#include <algorithm>
#include <vector>
#include <iterator>
int main()
{
int a[ 10 ] = { 10, 2, 17, 5, 16, 8, 13, 11, 20, 7 };
std::vector< int > v( a, a + 10 ); // copy of a
std::ostream_iterator< int > output( cout, " " );
cout << "Vector v contains: ";
std::copy( v.begin(), v.end(), output ); // display output vector
std::vector< int >::iterator location;
location = std::find( v.begin(), v.end(), 16 );
if ( location != v.end() ) // found 16
cout << "\n\nFound 16 at location " << ( location - v.begin() );
else // 16 not found
cout << "\n\n16 not found";
cout << endl;
return 0;
}
/*
Vector v contains: 10 2 17 5 16 8 13 11 20 7
Found 16 at location 4
*/
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