I am sorry but so many STL functions are just being used without even teaching them, how is a beginner supposed to understand all of this? What is pair<string,string> and c_str???
What is pair<string,string>
hi @Parikalp10,
The pair container is a simple container defined in header consisting of two data elements or objects.
- The first element is referenced as ‘first’ and the second element as ‘second’ and the order is fixed (first, second).
- Pair is used to combine together two values which may be different in type. Pair provides a way to store two heterogeneous objects as a single unit.
- Pair can be assigned, copied and compared. The array of objects allocated in a map or hash_map are of type ‘pair’ by default in which all the ‘first’ elements are unique keys associated with their ‘second’ value objects.
- To access the elements, we use variable name followed by dot operator followed by the keyword first or second.
refer here for details : http://www.cplusplus.com/reference/utility/pair/
c_str() converts a C++ string into a C-style string which is essentially a null terminated array of bytes. You use it when you want to pass a C++ string into a function that expects a C-style string
regarding your issue . please tell me which course have you enrolled in , i will ask the mentor and the staffs about your concern .
Hi, thank you for this but I can find this on Google too, right? What is the use of enrolling in this course if everything is not explained? I am enrolled in C++ Master Course
We’ll take your concern into consideration. We’ll update the course content soon. for any more suggestions, please drop a mail at [email protected]
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