My project takes a filename and opens it. I need to read each line of a .txt file until the first digit occurs, skipping whitespace, chars, zeros, or special chars. My text file could look like this:
1435 //1, nextline
0 //skip, next line
//skip, nextline
(*Hi 245*) 2 //skip until second 2 after comment and count, next line
345 556 //3 and count, next line
4 //4, nextline
My desired output would be all the way up to nine but I condensed it:
Digit Count Frequency
1: 1 .25
2: 1 .25
3: 1 .25
4: 1 .25
My code is as follows:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main() {
int digit = 1;
int array[8];
string filename;
//cout for getting user path
//the compiler parses string literals differently so use a double backslash or a forward slash
cout << "Enter the path of the data file, be sure to include extension." << endl;
cout << "You can use either of the following:" << endl;
cout << "A forwardslash or double backslash to separate each directory." << endl;
getline(cin,filename);
ifstream input_file(filename.c_str());
if (input_file.is_open()) { //if file is open
cout << "open" << endl; //just a coding check to make sure it works ignore
string fileContents; //string to store contents
string temp;
while (!input_file.eof()) { //not end of file I know not best practice
getline(input_file, temp);
fileContents.append(temp); //appends file to string
}
cout << fileContents << endl; //prints string for test
}
else {
cout << "Error opening file check path or file extension" << endl;
}
In this file format, (*
signals the beginning of a comment, so everything from there to a matching *)
should be ignored (even if it contains a digit). For example, given input of (*Hi 245*) 6
, the 6
should be counted, not the 2
.
How do I iterate over the file only finding the first integer and counting it, while ignoring comments?