Question

Write a recursive function that takes a string as input. This recursive function should open a file by the name of the string, and read the first word. Then attempt to open a file by the word you just read and repeat this process. This ends, when there is no file with the name you are looking for. At this point, cout the last word in the current file (the one where the first word was not a different file).

So for example if you have three files: "hi.txt" contains: moo is happy cow "moo" contains: im actually a sad cow "cow" contains: the cow is a lie

If you ran this recursive function on "hi.txt", you would find the first word in this file is "moo". "moo" is an actual file, so we open it. The first word in "moo" is "im". There is no file "im", so we would just cout "cow". (Ensure you do not write the function for this specific example... but any combinations of files and words.)

Answer 1

void readFiles(string file){
     
   ifstream fin,f;
   fin.open(file.c_str());//open the file to read
   string word;
   fin>>word;//read first word
   f.open(word.c_str());//open the file with that name
   if(f.is_open()){//if file is getting opened
       readFiles(word);//call the function again on that file
   }else{//if file is not getting opened
       while(fin>>word){//read all the words
          
       }
       cout<<word;//cout the last word
   }
  
}

[*] readFlles_recurs.cpp 1 #include<iostream> 2 #include<fstream> im 1 hi.txt im actually a sad cow using namespace std; 69 void readFiles(string file){ CAUsers\Vaibhav Documents\C++\readFiles_recurs.exe - O X COW ifstream fin, f; fin.open(file.c_str();//open the file to read string word; fin>>word;//read first word f.open(word.c_str(); // open the file with that name if(f.is_open() {/lif file is getting opened readFiles(word);//call the function again on that file }else{//if file is not getting opened while(fin>>word){ //read all the words Process exited after 0.1869 seconds with return value o Press any key to continue ... I cout<<word;//cout the last word 24 Q int main() { 25 readFiles("hi.txt"); return 0; 27 L}