```cpp

include[HTML_REMOVED]

include[HTML_REMOVED]

using namespace std;
int main(){
int a,b,c,t,A,B,C;
cin>>a>>b>>c;
A=a;
B=b;
C=c;

if(a>b){
    t=a;
    a=b;
    b=t;
}
if(a>c){
    t=a;
    a=c;
    c=t;
}
if(b>c){
    t=b;
    b=c;
    c=t;
}
printf("%d\n%d\n%d\n",a,b,c);
printf("\n%d\n%d\n%d\n",A,B,C);
return 0;

}

法二 加了algorithm头文件，可以运用swap和reverse等函数

include[HTML_REMOVED]

include[HTML_REMOVED]

include[HTML_REMOVED]

using namespace std;
int main(){
int a,b,c,t,A,B,C;
cin>>a>>b>>c;
A=a;
B=b;
C=c;

if(a>b){
    swap(a,b);
}
if(a>c){
    swap(a,c);
}
if(b>c){
    swap(b,c);
}
printf("%d\n%d\n%d\n",a,b,c);
printf("\n%d\n%d\n%d\n",A,B,C);
return 0;

}