Working with files. Help please. C++.

Question

As written from a file like this:
—————————————-
text.txt:
FirstMassive: 3 8 1 0 5
SecondMassive: 8 3 5 1 8
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How to make that from a text file the numbers are written into an array while ignoring the first word in the line (the name of the array). That is, the program must write numbers from the text file into an array, but ignore the first word in each line. Working on c++.

Answer 1

Почитай про регэкспы (regexp). Это очень мощный инструмент по разбору строк.
Если пользоваться "подручными" средствами, то можно пропустить в строке всё до : и вычитывать потом числа.
Посмотри ещё на stringstream. С его помощью можно "перечитать" вытащенную из файла строчку.

Answer 2

Глеб Can I see the code you are working on? I don't want to write something different with what you do.

Answer 3

Okay, when you are done with code for reading file as string, let me know, I'll get back to you later.

Answer 4

https://code.sololearn.com/ctY22gJgcude/?ref=app

Answer 5

I don't know c++ well but you should jump one line and then split the second line beetween spaces and get all values after the first one (excluded) and then repear the same thing for the second line

Answer 6

I see 3 8 1 0 5 and 8 3 5 1 8 on the example, five numbers on each line. Are all the rows equally contain 5 numbers? are there rows with less or more than five numbers? if so, then dynamic container such as vector would be more suitable opposed to array.

Also are all these numbers single digit as shown in the example?

Answer 7

Глеб Is it possible that any of the number is more than one digit? e.g.

FirstMassive 14 63 7 24 9
SecondMassive 8 23 5 1 48

And is there a variety in count of number per line? I mean is there a possibility a line has more or less than five numbers? e.g.

FirstMassive 3 8 1 0 5
SecondMassive 8 3 5 1 8 7
ThirdMassive 6 3 9 1

Also, it would help if you post the code you are working on so we could solve this?

Answer 8

I perfectly understand both vectors and arrays. it is important for me to make it so that by using the fstream library I could ignore the first word in each line and write down the number that stands after this word in some variable in my program

Answer 9

Yes, maybe more than 1 number. About the array, I said for an example. to me the fact of missing the first word is important.For example:
text.txt:
[Speed]: 500
[Health]: 1000
We must record the number of speed and lives in the variable speed and hp, respectively. Make sure that the words [Speed]: and [Health]: are ignoring in the notebook. How to do it.

Answer 10

I have not had time to write anything grandiose:
https://code.sololearn.com/c5ZSPF542984/?ref=app

Answer 11

English please

Answer 12

Sergey Ushakov , если вам не трудно могли бы вы предоставить простой пример того что вы сказали

Answer 13

Спасибо, буду разбираться.