可能一个switch作为另一个switch语句序列的一部分。即使在内外switch的case语句的常数包含共同的值,但是不会有冲突将出现。
嵌套switch语句的语法如下:
switch(ch1) { case 'A': printf("This A is part of outer switch" ); switch(ch2) { case 'A': printf("This A is part of inner switch" ); break; case 'B': /* case code */ } break; case 'B': /* case code */ }
#include <stdio.h> int main () { /* local variable definition */ int a = 100; int b = 200; switch(a) { case 100: printf("This is part of outer switch", a ); switch(b) { case 200: printf("This is part of inner switch", a ); } } printf("Exact value of a is : %d", a ); printf("Exact value of b is : %d", b ); return 0; }
让我们编译和运行上面的程序,这将产生以下结果:
This is part of outer switch This is part of inner switch Exact value of a is : 100 Exact value of b is : 200