Learning immediately: https://edu.csdn.net/course/play/27250/359791?utm_source=blogtoedu
while do--while
break: the end of the loop layer
continue: the end of this cycle, continues to skip the loop
// dowhile performed after the first determination; while performing the first determination
int j=0;
//while(j<10)
{
j++;
printf("j=%d\n",j);
}//
do
{
j++;
printf("j=%d\n",j);
}while(j<10);