[C语言学习笔记]_基础知识_switch case语句

举例:

做一个选择的菜单,可以用if(){} else if(){} else 来写,但是菜单列如果太多了,就显得不是很方便,菜单如下:

	printf("****************************************\n");
	printf("************* 1.start    ***************\n");
	printf("************* 2.language ***************\n");
	printf("************* 3.exit     ***************\n");
	printf("****************************************\n");

用switch case语句写如下:

		int input_choose;
		switch (input_choose)
		{
		case 1: printf("your choose is 1"); break;
		case 2: printf("your choose is 2"); break;
		case 3: printf("your choose is 3"); break;
		default:printf("input err"); break;
		}

用if else 可以写成:

		int input_choose;
		if (input_choose == 1)
			printf("your choose is 1");
		else if (input_choose == 2)
			printf("your choose is 2");		
		else if (input_choose == 3)
			printf("your choose is 3");
		else
			printf("input err");

相对来说用switch case写的要好看一点,不那么麻烦.