database - How to store a table with varying number of columns and rows? C++ -


i'm confused new programming assignment got in class few days ago. asks read info file contains unknown number of rows , columns , sort data. question how do that?

my reasoning if knew number of columns, create array of structures , create new structure each row. since number of columns unknown, don't know how approach this.

also, allowed use <iostream> <fstream>, <cctype> , <vector> libraries.

you use 

std::vector<std::vector<whatevertypeyouwanttostore>>

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