This can be caused by a number of reasons . It can be caused by a sudden drop in heart rate, an erratic ineffective heart rate., drop in blood pressure caused by ineffective constriction of veins that sometimes is caused caused by dehydration or sudden standing. These are just some of the causes. ...Read more.
A typical declaration for an array in C++ is: type name [elements]; where type is a valid type (such as int, float...), name is a valid identifier and the elements field (which is always enclosed in square brackets []), specifies the length of the array in terms of the number of elements.
The std::string type is the main string datatype in standard C++ since 1998, but it was not always part of C++. From C, C++ inherited the convention of using null-terminated strings that are handled by a pointer to their first element, and a library of functions that manipulate such strings.