thello_user.A.cpp - numeric - C++ library with numerical algorithms
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thello_user.A.cpp (321B)
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1 #include <iostream>
2 #include <string>
3 #include <cstdlib> // For getenv()
4
5 int main()
6 {
7 // Namespace definitions
8 using std::cout;
9 using std::string;
10
11 // Get USER environment variable
12 string username = getenv("USER");
13
14 // Greet user
15 cout << "Hello, " << username << '\n';
16
17 // Successfull exit
18 return 0;
19 }