'How to exit from .out file to add string to stdin?

I'd like to add every line to stdin, but I can't because a.out doesn't exit from loop.

C++ code:

#include <iostream>

int main() {
  std::string in;
  
  while(1){
    std::cin >> in;
    if(in == "exit")
      break;
    std::cout <<in << "\n"; 
  }
  return 0;
}

And a bash code:

#!/bin/bash
while read -r line
do
  echo "$line" | ./a.out >> output.txt
done < "input.txt

Thanks!

c++linuxbashg++


Solution 1:[1]

your C++ part works perfectly. But as soon as it exits, you again do while read -r line. Try to enter EOF just after "exit" line.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Dmitry

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