c++学习日常

#include<iostream>
using namespace std;
#include<string.h>
int main(){
  //1.c语言风格 
  char str[]="hello world";
  cout<<str<<endl;
  //2.c++风格 
  string str2="hello world";
  cout<<str2<<endl;
  system("pause");
}

#include<iostream>
using namespace std;
#include<string.h>
int main(){
  bool flag=true;
  cout<<flag<<endl;
  flag=false;
  cout<<flag<<endl;
  cout<<"size of bool = "<<sizeof(bool)<<endl;
system("pause");
}