I am pretty new to c++ and was trying to add a new string in C++ array. In Python we can add new items by .append(). Is there any function like this in C++?
2 Answers
in C++ arrays are of a static size. I would recommend including the vector header and replacing the array with a std::vector. vector has a function to add a new entry
9 Comments
Martin Rosenau
It would also be possible to use a pointer instead of an array and to use the
malloc() and realloc() functions.
Some programmer dude
@MartinRosenau
malloc and realloc will not work well together with objects.
Marijn Kneppers
Indeed, but that would require you to know the index of the data entry. OP is asking for a equivalent function. That would only be possible using a vector.
Martin Rosenau
@Someprogrammerdude That's right. However, in most other programming languages an array of objects is more like
MyClass *myArray[] in C++, not like MyClass myArray[], because you would do: myArray[9] = new MyClass(). And allocating an array whose elements are pointers to objects would work well using realloc().
mch
@MartinRosenau no, in C++ you would do
std::vector<MyClass> myArray; and myArray.emplace_back(<constructor arguments>);. |
// Declaring Vector of String type
// Values can be added here using initializer-list syntax
std::vector<std::string> colour {"Blue", "Red", "Orange"};
// Strings can be added at any time with push_back
colour.push_back("Yellow");
https://www.geeksforgeeks.org/array-strings-c-3-different-ways-create/
std::list. If you prefer an arraystd::vectoris the way to go.