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Opening .txt files

How exactly would you open and read the contents of a text file? All I get are errors.

27th Jul 2017, 3:29 AM
Samuel
Samuel - avatar
12 Answers
+ 11
#include <iostream> #include <fstream> using namespace std; int main () { string line; char input; ifstream MyFile; cout << "Do you want to read text file? (Y/N) : "; cin >> input; if (input == 'Y') { MyFile.open("test.txt"); while ( getline (MyFile, line) ) { cout << line << '\n'; } MyFile.close(); } return 0; }
27th Jul 2017, 2:52 PM
Hatsy Rei
Hatsy Rei - avatar
+ 10
This is actually covered in our C++ course. You include the <fstream> header to deal with files. Create an instance of ifstream object. Read the file using the ifstream .open() method and file streams. //assuming file line < 10 string data[10]; int counter = 0; ifstream obj; obj.open("yourtextfile.txt"); while (!obj.eof()) // while not end of file { getline(obj, data[counter]); counter++; } // reads every line of text into your string array. If you have any problems, you can post your code here for inspection.
27th Jul 2017, 3:39 AM
Hatsy Rei
Hatsy Rei - avatar
+ 9
i would have to go through the tutorial again to find it. can you copy it into codeplayground for us?
27th Jul 2017, 2:09 PM
jay
jay - avatar
+ 9
Hatsy = perfect as usual 😊 here is how one would write the file and to show that it works as presented here. https://code.sololearn.com/cvx1oY29PV6A/?ref=app
27th Jul 2017, 2:59 PM
jay
jay - avatar
+ 8
@Jordan You are also part of the community, so it's our (as in the possession of the entire community) course! :D (Ofc, nobody gets paid for reporting bugs...)
27th Jul 2017, 8:07 AM
Hatsy Rei
Hatsy Rei - avatar
+ 8
Replace input char variable with a string variable.
27th Jul 2017, 3:30 PM
Hatsy Rei
Hatsy Rei - avatar
+ 6
+1 Hatsy. Also make sure that the text file contents are in the order the code expects them to be in. best bet is to post the code as Hatsy recommended
27th Jul 2017, 3:47 AM
jay
jay - avatar
+ 3
@Hatsy, you said "our C++ course". Do you work for solo learn? Who else works for solo learn? Or am I just misunderstanding?
27th Jul 2017, 8:01 AM
Jordan Chapman
Jordan Chapman - avatar
+ 2
I am trying to make a c++ program that takes input and, if a certain input is entered, prints the contents of a text file. If statements aren't working
27th Jul 2017, 2:29 PM
Samuel
Samuel - avatar
+ 1
I tried to use some of the example code in the tutorial, but the compiler on the computer never recognizes the "Myfile" object.
27th Jul 2017, 2:03 PM
Samuel
Samuel - avatar
+ 1
#include <iostream> #include <fstream> using namespace std; int main () { string line; ifstream MyFile("test.txt"); while ( getline (MyFile, line) ) { cout << line << '\n'; } MyFile.close(); }
27th Jul 2017, 2:11 PM
Samuel
Samuel - avatar
+ 1
Interesting.......but what if instead of a Y/N input, it is a whole word? How would you make that work with an if statement?
27th Jul 2017, 3:10 PM
Samuel
Samuel - avatar