Question

write a c++ program that can take an input file with string as for example "i saw 5 teddy bears"

and in a created output file create a new string to just change a digit to a word. To " I saw five teddy bears" . output should be located in an output file

thank you

Answer 1

#include <iostream>
#include <fstream>

using namespace std;
  
int main()
{
//fstream
fstream file;
string word, t, q, filename;
  
string digitToWord[] = {"one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};

//open file
file.open("input.txt");
ofstream myfile ("output.txt");
  
if (myfile.is_open())
{
//read file
while (file >> word)
{
if(isdigit(word[0]) && word[1] == '\0')
{
myfile<<digitToWord[word[0]-'0'-1]<<" ";
}
else
{
myfile<<word<<" ";
}
}
}
  
//close the file
file.close();
myfile.close();

return 0;
}

INPUT:

input.txt

i saw 5 teddy bears

OUTPUT:

output.txt

i saw five teddy bears