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  1. #include <unistd.h>
  2. #include <iostream>
  3. #include <string>
  4. #include <sys/types.h>
  5. #include <sys/wait.h>
  6.  
  7. struct MyClass {
  8.   static void foo();
  9. };
  10.  
  11. void MyClass::foo () {
  12.     static std::string uuid;
  13.     std::cout << "Foo: b4: " << uuid << "\n";
  14.     uuid = "A new value";
  15.     std::cout << "Foo: after: " << uuid << "\n";
  16. }
  17.  
  18. int main () {
  19.   int rc = fork();
  20.   if(rc < 0) {
  21.     perror("fork");
  22.     return 1;
  23.   }
  24.   if(rc) {
  25.     std::cout << "Parent, waiting for child pid == " << rc << "\n";
  26.     wait(0);
  27.     std::cout << "Parent, done waiting\n";
  28.   } else {
  29.     std::cout << "Child\n";
  30.   }
  31.   MyClass::foo();
  32. }
  33.  
Success #stdin #stdout 0.01s 2856KB
comments (?)
stdin
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Standard input is empty
stdout
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Child
Foo: b4: 
Foo: after: A new value
Parent, waiting for child pid == 16847
Parent, done waiting
Foo: b4: 
Foo: after: A new value
https://ideone.com/fJ9vh
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
secret

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