file processing(input from a file)

Question

i have a simple text file with columns first name, last name and nickname...i was trying to get the inputs from each row in the file in a c++ program....then a problem cropped up...i had left out filling columns of a few rows....here is a sample table:

avinash kumar snu
akash         aks
        rohan ron

now i am inputting the columns into first, last and nick field of objects of people class using c++.... now when i input for 2nd row aks goes in the 'last' field and for 3rd row rohan goes in the 'first' field and ron goes in the 'last' field....so can anyone suggest a way by which i can fix this up......if it cant be fixed can i at least know how many columns have actually been input(means number of columns) ?

Answer 1

As Brian and Andrejs have commented, you'll have to parse the file line by line. Assuming there's always at least one name and never more than three, then you have 7 possibilites (0 where there's no name):

A B C,

A B 0, A 0 C, 0 B C,

A 0 0, 0 B 0, 0 0 C

Parse the line and save the names in a temporary variable. Also save the starting position of each name within the line. In case you get less than 3 names, you can logically determine which name(s) are missing, based on max length of a line. Hope this makes sense, it's not very elegant solution :)