- #1
Sadmemo
- 32
- 0
How can i read file data into 2d vector ?thanks
To read file data into a 2D vector, you will first need to open the file and store the data in a temporary vector. Then, you can use a loop to iterate through the temporary vector and add each element to the 2D vector in the desired format.
A 2D vector in C++ is a data structure that stores elements in a two-dimensional grid, similar to a matrix. It is a vector of vectors, where each inner vector represents a row in the grid.
To open a file in C++, you will need to include the <fstream>
library and use the open()
function on an fstream
object. You will also need to specify the file name and the opening mode (e.g. ifstream
for reading or ofstream
for writing).
Yes, you can read data from a file into a 2D vector of any data type as long as the data in the file is in a compatible format. You may need to use functions such as stoi()
or stod()
to convert strings to integers or doubles, respectively.
You can handle errors when reading file data into a 2D vector by using conditional statements to check for errors such as an empty file or incorrect data types. You can also use the fail()
function to check if the file was successfully opened.