What is the difference between Iostream and namespace std?

Related questions

1. Which sort is efficient and fast in C?
2. Which is the slowest sorting algorithm?
3. What is stable sorting technique?
4. What is difference between sorting and indexing explain with example?
5. Which sorting technique is faster?
6. What is sorting how it is done?
7. Is C++ vector thread safe?
8. What is volatile C?
9. How does Qsort work in C?
10. Why is bubble sort slow?

Tags

1. #basic
2. #completely
3. #input
4. #iostream
5. #packaged
6. #later
7. #header
8. #directive
9. #preprocessor
10. #things
11. #output
12. #operations
13. #former
14. #library
15. #global
16. #contents
17. #include
18. #while
19. #different
20. #namespace
21. #current