4.7用switch语句实现多分支选择结构 例4.7

#include
int main()
{
void action1(int,int),action2(int,int);
char ch;
int a=15,b=23;
ch=getchar();
switch(ch)
{
case ‘a’:
case ‘A’:action1(a,b);break;
case ‘b’:
case ‘B’:action2(a,b);break;
.
.
.
default:putchar(’\a’);
}
return 0;
}
void action1(int x,int y)
{
printf(“x+y=%d\n”,x+y);
}
void action2(int x,int y)
{
printf("xy=%d\n",xy);
}