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  1. #include <algorithm>
  2. #include <iostream>
  3. #include <iterator>
  4. #include <string>
  5. #include <vector>
  6.  
  7. int main()
  8. {
  9.     std::vector<std::string> args;
  10.     unsigned time = 5;
  11.     std::string temp, message, input;
  12.  
  13.     args.push_back("-m");
  14.  
  15.     std::cout << "\nAlright, Please enter your message: " << std::flush;
  16.     std::getline(std::cin, message);
  17.     std::cout << "\n\n";
  18.     args.push_back('"' + message + '"');
  19.  
  20.     std::cout << "Please enter time: " << std::flush;
  21.  
  22.     // Validate input until it's an actual second.
  23.     bool valid = false;
  24.     while (!valid){
  25.         std::getline(std::cin, temp);
  26.  
  27.         // Validate first five characters as digits
  28.         valid = true;
  29.         input = "";
  30.         for (unsigned i = 0; i < temp.length() && i < 5; i++)
  31.         {
  32.             if (!::isdigit(temp[i]))
  33.             {
  34.                 valid = false;
  35.             }
  36.             input.push_back(temp[i]);
  37.         }
  38.         time = atoi(input.c_str());
  39.         if (valid && time < 1) {
  40.             std::cout <<"Unable to use a number less than 1 seconds!" << std::endl;
  41.             valid = false;
  42.         }
  43.         if (!valid)
  44.         {
  45.             std::cout << "Please enter the number of seconds." << std::endl;
  46.         }
  47.     }
  48.     std::cout << "\n";
  49.     args.push_back("-t");
  50.     args.push_back(input);
  51.  
  52.     std::cout << "Your " << args.size() << " args are: ";
  53.     std::copy(args.begin(), args.end(), std::ostream_iterator<std::string>(std::cout, ", "));
  54. }
  55.  
  56.  
Success #stdin #stdout 0s 3036KB
comments (?)
stdin
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This is a message. It is quite long.
This is an invalid value for "time"
So is this.
The next one will succeed.
50
stdout
copy 
Alright, Please enter your message: 

Please enter time: Please enter the number of seconds.
Please enter the number of seconds.
Please enter the number of seconds.

Your 4 args are: -m, "This is a message. It is quite long.", -t, 50,
https://ideone.com/KV5DL6
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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