break;

#include <iostream>
using namespace std;

int main()
{
  // An example of a standard for loop
  for (int i = 1; i < 10; i++)
  {
    cout << i << '\n';
    if (i == 4)
      break;
  }

  // An example of a range-based for loop
int nums []{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

  for (int i : nums) {
    if (i == 4) {
      break;
    }
    cout << i << '\n';
  }
}

1
2
3

#include <iostream>
using namespace std;

int main() {
  int i = 0;

  while (i < 10) {
    if (i == 4) {
      break;
    }
    cout << i << '\n';
    i++;
  }

  i = 0;
  do {
    if (i == 4) {
      break;
    }
    cout << i << '\n';
    i++;
  } while (i < 10);
}

0
1
2
3

#include <iostream>
using namespace std;

enum Suit{ Diamonds, Hearts, Clubs, Spades };

int main() {

  Suit hand;
  . . .
  // Assume that some enum value is set for hand
  // In this example, each case is handled separately
  switch (hand)
  {
  case Diamonds:
    cout << "got Diamonds \n";
    break;
  case Hearts:
    cout << "got Hearts \n";
    break;
  case Clubs:
    cout << "got Clubs \n";
    break;
  case Spades:
    cout << "got Spades \n";
    break;
  default: 
     cout << "didn't get card \n";
  }
  // In this example, Diamonds and Hearts are handled one way, and
  // Clubs, Spades, and the default value are handled another way
  switch (hand)
  {
  case Diamonds:
  case Hearts:
    cout << "got a red card \n";
    break;
  case Clubs:
  case Spades: 
  default:
    cout << "didn't get a red card \n";
  }
}

continue;

// continue_statement.cpp
#include <stdio.h>
int main()
{
  int i = 0;
  do
  {
    i++;
    printf_s("在继续之前\n");
    continue;
    printf("在继续之后，不被输出\n");
   } while (i < 3);

   printf_s("在do循环之后\n");
}

在继续之前
在继续之前
在继续之前
在do循环之后