continue Statement

The continue statement, when executed in a while, for or do...while statement, skips the remaining statements in the body of that statement and proceeds with the next iteration of the loop. In while and do...while statements, the loop-continuation test evaluates immediately after the continue statement executes. In the for statement, the increment expression executes, then the loop-continuation test evaluates.

Figure 5.14 uses the continue statement (line 11) in a for statement to skip the output statement (line 13) when the nested if (lines 10–11) determines that the value of count is 5. When the continue statement executes, program control continues with the increment of the control variable in the for header (line 8) and loops five more times.

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 1   // Fig. 5.14: fig05_14.cpp
 2   // continue statement terminating an iteration of a for statement.
 3   #include <iostream>
 4   using namespace std;
 5
 6   int main()
 7   {
 8      for ( unsigned int count = 1; count <= 10; ++count ) // loop 10 times
 9      {
10         if ( count == 5 ) // if count is 5,
11            continue;      // skip remaining code in loop
12
13         cout << count << " ";
14      } // end for
15
16      cout << " Used continue to skip printing 5" << endl;
17   } // end main

1 2 3 4 6 7 8 9 10
Used continue to skip printing 5

Fig. 5.14. continue statement terminating an iteration of a for statement.

In Section 5.3, we stated that the while statement could be used in most cases to represent the for statement. The one exception occurs when the increment expression in the while statement follows the continue statement. In this case, the increment does not execute before the program tests the loop-continuation condition, and the while does not execute in the same manner as the for.

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