Programming in D: The Ultimate Guide for Software Engineers/

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Solution: Write the Contents of a File to Another File

Solution: Write the Contents of a File to Another File

This lesson provides a solution to the challenge given in the previous lesson.

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Solution #

Here is the code that will write the contents of a file to another file.

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import std.stdio;
import std.string;
void main() {
    string inFileName = "foo.txt";
    File inFile = File(inFileName, "r");
    string outFileName = inFileName ~ ".out";
    File outFile = File(outFileName, "w");
    while (!inFile.eof()) {
        string line = strip(inFile.readln());
        if (line.length != 0) {
            outFile.writeln(line);
        }
    }
    writeln(outFileName, " has been created.");
    inFile = File(outFileName, "r");
    while (!inFile.eof()) {
        string line = strip(inFile.readln());
        writeln(line);
    }
   
}

Solution explanation #

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