case 'C':case 'c': printf(\ default:printf(\ } }
void main(){
char a1='b',a2='C',a3='f'; SB(a1);SB(a2); SB(a3);SB('A'); printf(\ }
输出结果为： GGPPBBWW
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2. #include<>
#include<>
double SD(int a,int b,char op){ double x; switch(op){
case '+':x=a+b;break; case '-':x=a-b;break; case '*':x=a*b;break;
case '/':if(b)x=(double)a/b; else exit(1); break;
default:{(\运算符错！\\n\ }
return x; }
void main(){
int x=20,y=8;
printf(\ printf(\ printf(\ }
输出结果为：
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3. #include<>
void WF(int x,int y){ x=x+y; y=x+y;
printf(\ }
void main(){
int x=18,y=23;
printf(\ WF(x,y); x=2*x;
printf(\ }
输出结果为： main:x,y=18,23 subs:x,y=41,64 main:x,y=36,23
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4. #include<> #include<>
void fun(char ss[]); void main(){
