continue statement
Causes the remaining portion of the enclosing for, range-for, while or do-while loop body to be skipped.
Used when it is otherwise awkward to ignore the remaining portion of the loop using conditional statements.
Syntax
attr(optional) continue ; |
Explanation
The continue statement causes a jump, as if by goto to the end of the loop body (it may only appear within the loop body of for, range-for, while, and do-while loops).
More precisely,
For while loop, it acts as.
while (/* ... */) {
// ...
continue; // acts as goto contin;
// ...
contin:;
}For do-while loop, it acts as:
do {
// ...
continue; // acts as goto contin;
// ...
contin:;
} while (/* ... */);For for and range-for loop, it acts as:
for (/* ... */) {
// ...
continue; // acts as goto contin;
// ...
contin:;
}Keywords
Example
#include <iostream>
int main()
{
for (int i = 0; i < 10; i++) {
if (i != 5) continue;
std::cout << i << " "; //this statement is skipped each time i!=5
}
std::cout << '\n';
for (int j = 0; j < 2; j++) {
for (int k = 0; k < 5; k++) { //only this loop is affected by continue
if (k == 3) continue;
std::cout << j << k << " "; //this statement is skipped each time k==3
}
}
}Output:
5 00 01 02 04 10 11 12 14
See also
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http://en.cppreference.com/w/cpp/language/continue