What is the correct way to include a C++ standard library header file named 'vector' in a C++ program?
A. #include <vector>
B. #include "vector.h"
C. #include <vector.h>
D. #include "vector"
Answer: Option A
A. #include <vector>
B. #include "vector.h"
C. #include <vector.h>
D. #include "vector"
Answer: Option A
What does the 'cin' object in C++ represent?
A. File output stream
B. File input stream
C. Standard output stream
D. Standard input stream
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