帮忙看一个main参数的有关问题

帮忙看一个main参数的问题
源程序如下：
#include <iostream>
#include <string>

using namespace std;

int main(int argc, char** argv) {
  if (argc != 2) {
  cout << "wrong number of inputs" << endl;
  exit(1);
  }
  string test = "dream";
  cout << "is test equal to \"dream\"? " <<(test == "dream")<< endl;
  cout << "is argv[1] equal to \"dream\"?" << (argv[1] == "dream") 
  << endl;
  cout << "is argv[1] equal to test?" << (argv[1] == test) << endl;
   
  return 0;
}

在命令行中敲入：commandname dream
结果为：
is test equal to "dream"? 1
is argv[1] equal to "dream"?0
is argv[1] equal to test?1

既然 argv[1]和equal相等，equal和“dream”相等，那么argv[1]和“dream”为什么不等呢？


------解决方案--------------------
argv[1]是char*类型不能和“dream”直接==来判断的，应该是strcmp(argv[1], "dream") == 0来判断；
或者：
strring strArgv1 = argv[1];
strArgv1 == "dream";