The difference and usage between continue and break

  generally speaking , After the program enters the loop All statements of the loop body will be executed between the next loop test .continue and break Statement can ignore part of the loop content according to the test results in the loop body , Even the end of the cycle .

continue sentence

  All three cycles can be used continue sentence . When the statement is executed , Will skip this iteration （ It's a cycle ） The rest of , And start the next iteration . If continue Statement in nested loop , Only the inner loop containing the statement will be affected .

grammar

C In language  continue  Sentence syntax ：

continue;

  flow chart

example

#include <stdio.h>

int main ()

{

   /* Definition of local variables */

   int a = 10;

   /* do Loop execution */

   do

   {

      if( a == 15)

      {

         /* Skip iteration */

         a = a + 1;

         continue;

      }

     printf("a Value ： %d\n", a);

  a++;

   }while( a < 20 );

   return 0;

}

When the above code is compiled and executed , It will produce the following results ：

a Value ： 10

a Value ： 11

a Value ： 12

a Value ： 13

a Value ： 14

a Value ： 16

a Value ： 17

a Value ： 18

a Value ： 19

 

break sentence

C In language break Statement has the following two uses ：

When break When a statement appears in a loop , The loop ends immediately , And the program flow continues to execute the next statement that follows the loop .

It can be used to terminate switch One of the sentences case.

grammar

C In language break Sentence syntax ：

break;

  flow chart

example

#include <stdio.h>

int main ()

{

   /* Definition of local variables */

   int a = 10;

   /* while Loop execution */

   while( a < 20 )

   {

      printf("a Value ： %d\n", a);

      a++;

      if( a > 15)

      {

         /* Use break Statement to terminate the loop */

          break;

      }

   }

   return 0;

}

When the above code is compiled and executed , It will produce the following results ：

a Value ： 10

a Value ： 11

a Value ： 12

a Value ： 13

a Value ： 14

a Value ： 15