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