while (condition) {
  ...
  if (someCondition) { continue; /* skip to beginning of this loop */ }
  ...
}

top: for (int 1 = 0; i < 10; ++i) {
  ...
  middle: for (int j = 0; j < 10; ++j) {
    ...
    bottom: for (int k = 0; k < 10; ++k) {
    ...
    if (top_condition) { continue top; /* restart outer loop */ }
    ...
    if (middle_condition) { continue middle; /* restart middle loop */ }
    ...
    if (bottom_condition) { continue bottom; /* restart bottom loop */ }
    ...
    if (bottom_condition) { continue; /* this will also restart bottom loop */ }
    ...
    }
    ...
  }
  ....
}