I need only one C++ function . It's C++ don't write any other language.

Hello I need unzip function here is my zip function below. So I need the opposite function unzip.

Instructions:

The next tools you will build come in a pair, because one (zip) is a file compression tool, and

the other (unzip) is a file decompression tool.

The type of compression used here is a simple form of compression called run-length encoding (RLE). RLE is quite simple: when you encounter n characters of the same type in a row, the compression tool (zip) will turn that into the number n and a single instance of the character.

Thus, if we had a file with the following contents: aaaaaaaaaabbbb the tool or Zip function would turn it (logically) into: 10a4b

So write the C++ unzip function that will turn 10a4b into aaaaaaaaaabbbb opposite of zip function. I'll make a txt file example like file.txt that will have 10a4b text once I will run your unzip function it will turn into aaaaaaaaaabbbb. I tested my zip function on terminal and it's working perfectly.

here is my zip function:

Full program with zip funcion with output

#include #include #include

using namespace std; string zip(const string & str) { int i = str.size(); string enc;

for (int j = 0; j < i; ++j) { int count = 1; while (str[j] == str[j + 1]) { count++; j++; } enc += std::to_string(count); enc.push_back(str[j]); } return enc; } int main(int argc, char *argv[]) { ifstream in; // one argument if (argc<2) { cout << "Please enter command"; return(-1); } // two arguments if (argc<3) { cout << "Please enter file name"; return(-1); } in.open(argv[2]); if (in.bad()) { cout << "File not found"; return(-1); } string line; // read each line while (getline(in, line)) { // decode line string encode = zip(line); // print line cout << encode << endl; } return(0); }