#include
#include
using namespace std;
int main()
{
char *string1 = "The value is 3.14159";
char *string2 = "test ";
cout << "string1 = " << string1
<< "\nstring2 = " << string2
<< "\n\nThe length of the initial segment of string1\n"
<< "containing only characters from string2 = "
<< strspn( string1, string2 ) << endl;
return 0;
}