Break,continue,return differences in the loop

; break ends the current loop, jumps out of the loop body, executes the subsequent program, and if there is a while nested, the inner layer appears with a break, exiting all loops or inner loops.
Such as
while (...) (1)
{
while (...) (2)
{....;
break;}
.....;
}
After break execution, the exit is (2), and (1) is still executed.
Continue end this cycle and make the next loop; (only one loop is exited)

Return jumps out of the way the loop body is located. Equivalent to ending the method.

How to use break to jump out of a two-layer loop.

BOOL Break=false;
while (...) {
For (...) {
if (...) {break=true;break;}
}
if (break) break;
}