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  1. #include <iostream>
  2. #include <unistd.h>
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     cout << "Hello" << endl;  // endl flushes buffer immediately
  8.     execlp("ls", "ls", (char*)NULL);  // correct argument list
  9.  
  10.     // This will only run if execlp fails
  11.     perror("execlp failed");
  12.     cout << "bye" << endl;
  13.     return 0;
  14. }
  15.  
Success #stdin #stdout 0.01s 5236KB
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stdin
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Standard input is empty
stdout
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Hello
prog
https://ideone.com/U6tlrh
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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