I run:
#include <iostream>
using namespace std;
int main(){
cout << "Hello world"<<endl;
return 0;
}
g++ hello.cpp
Error:
Undefined symbols for architecture x86_64:
"_main", referenced from:
implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
It's just a simple C++ program, I don't know what's wrong with my environment seeting. Could you please help me with this? Thanks!
