一文详解C++中运算符的使用

#include <iOStream>
using namespace std;

int main()
{
  int a = 66;
  int b = 33;
  int c;

  c = a + b;
  cout << "a + b 的值是 " << c << endl ;
  c = a - b;
  cout << "a - b 的值是 " << c << endl ;
  c = a * b;
  cout << "a * b 的值是 " << c << endl ;
  c = a / b;
  cout << "a / b 的值是 " << c << endl ;
  c = a % b;
  cout << "a % b 的值是 " << c << endl ;

  return 0;
}

#include <iostream>
using namespace std;

int main()
{

  int z = 1;
  cout << z++ << endl;
  
  int h = 1;
  cout << ++h;

  return 0;
}

#include <iostream>
using namespace std;

int main()
{
  int a = 21;
  int b = 10;
  int c ;

  if( a == b )
  {
    cout << "a 等于 b" << endl ;
  }
  else
  {
    cout << "a 不等于 b" << endl ;
  }
  if ( a < b )
  {
    cout << "a 小于 b" << endl ;
  }
  else
  {
    cout << "a 不小于 b" << endl ;
  }
  if ( a > b )
  {
    cout << "a大于 b" << endl ;
  }
  else
  {
    cout << "a 不大于 b" << endl ;
  }

  return 0;
}

#include <iostream>
using namespace std;

int main()
{
  int a = 10;
  int b = 20;
  int c = 30;
  int d = 100;

  if( a == b  || c < d)
    cout << "6666" << endl;
  else
    cout << "66-----66" << endl;

  if( a < b  && b < c && d < c)
    cout << "7777" << endl;
  else
    cout << "77-----77" << endl;

  if( !(a == b  || c == d))
    cout << "8888" << endl;
  else
    cout << "88-----88" << endl;
  return 0;
}