初识switch语句

#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <string.h> ::: hljs-center

==## 初识switch语句==

:::

//switch(整体表达式---int类型) //{ // 语句项;(case 整型常量表达式--int类的常量表达式: // 语句; // break;
// default:----终止错误输入 // 语句； // break; ) //} 学习例题

int main() { int n = 1; int m = 2; switch (n) { case 1: m++; case 2: n++; case 3: switch (n) {//switch允许嵌套使用 case 1: n++;//此时n=2，因此不执行 case 2: m++;n++; break; default: break; } case 4: m++; break; default: break; } printf("m= %d,n= %d\n", m, n); return 0;

}

int main() { int day = 0; int a = 0; scanf("%d", &day); scanf("%d", &a); switch (day) { case 1: if (a == 1) printf("We have a Chinese class on Monday.\n"); case 2: if (a == 2) printf("We have a math class on Tuesday.\n"); case 3: if (a == 3) printf("We have an English class on Wednesday.\n"); case 4: if (a == 4) printf("We have a physics class on Thursday.\n"); case 5: if (a == 5) printf("We have a biology and chemistry class on Friday.\n"); printf("Today is a working day.\n"); break; case 6: case 7: printf("weekend\n"); break; default: printf("input error!\n"); break;

}
return 0;

}

int main() { int day = 0;

scanf("%d", &day);
switch (day)
{
case 1:
	printf("Monday\n");
	break;
case 2:
	printf("Tuesday\n");
	break;
case 3:
	printf("Wednesday\n");
	break;
case 4:
	printf("Thursday\n");
	break;
case 5:
	printf("Friday\n");
	break;
case 6:
	printf("Saturday\n");
	break;
case 7:
	printf("Sunday\n");
	break;
default:
	printf("input error!\n");
	break;
}

return 0;

}