//break只能用于循环和swicth语句,--->跳出最内层 //continue只用于循环语句---->开始下次循环 #include <stdio.h> #define PI 3.1416 int main() { int radius ;//半径 double area;//圆的面积 for (radius = 1;radius<=10;radius++) { area = PI * radius *radius; if (area>120) break; printf("Square = %f\n",area); } printf("now radius = %d\n\n",radius-1); for (radius=1;radius<=10;radius++) { area = PI * radius *radius; if (area<120) continue; printf("Square = %f\n",area); } printf("now radius = %d\n\n",radius-1); }