Traps for C + + string.find () functions

String.find (char *) to find if the string contains substrings

Found: Returns the first index

Not found: Returns a large random number instead of returning negative numbers (this is a pit)

So can't write if (String.find (str) > 0)

This must be written if (String.find (str)! = NPOs)

string S ("1a2b3c4d5e6f7g8h9i1a2b3c4d5e6f7g8ha9i");
string Flag;
string::size_type position;
The //find function returns the subscript position of JK in S
position = S.find ("JK");
if (position! = S.npos)//If not found, return a special flag in C + + with NPOs representation, I am here NPOs value is 4294967295,
 {
cout << "position is:" << position << Endl;
 }
Else
 {
cout << "not found the flag" + flag;
 } 

Traps for C + + string.find () functions