#include
int k=7,m=5;
void f(int s){
int *t = &k;
s = &t;
*s = &m;
printf("%d %d %d",k,*t,s);
}
int main(){
int i=3,*p=&i,**r = &p;
f(r);
printf("\n");
printf("%d %d %d",i,*p,**r);
}
输出结果 755 333
第二段 #include <stdio.h>
int k=7,m=5;
void f(int s){
int *t = &k;
s = &t;
printf("%d %d %d",k,*t,s);
}
int main(){
int i=3,*p=&i,**r = &p;
f(r);
printf("\n");
printf("%d %d %d",i,*p,**r);
}
运行结果 777 333