001、
#include <stdio.h> int main(void) { int i; printf("i = "); scanf("%d", &i); switch(i % 3) ## 条件 { case 0: puts("can be devided by 3."); break; ## 匹配不同情况 case 1: puts("devided 3, remainder is 1"); break; case 2: puts("devided 3, remainder is 2"); break; } return 0; }
002、
#include <stdio.h> int main(void) { int i; printf("i = "); scanf("%d", &i); switch(i) { case 1: puts("A"); puts("B"); break; case 2: puts("C"); case 5: puts("D"); break; case 6: case 7: puts("E"); break; default : puts("F"); break; } return 0; }