Evaluate a string to a float value

Float:fstrval( const str[], index=0 )

Evaluate the string, starting at the index position for a float value

Returns the value as a float

    new s{20};
    new Float:x;
 
    strcopy(s, "Hello3.14"); 
 
    c = fstrval(s, 5);
 
    // c now equals 3.14