有以下程序:#includeint main(){ int a=2; switch (a) { case 1: printf(“1”); case 2: printf(“2”); case 3: printf(“3”); default: printf(“4”); break; }}程序运行后的输出结果是()
单选题
有以下程序:#includeint main(){ int a=2; switch (a) { case 1: printf(“1”); case 2: printf(“2”); case 3: printf(“3”); default: printf(“4”); break; }}程序运行后的输出结果是()