输入三个字符串按从小到大顺序输出,用指针答:void sort1(char*,char*,char*);void sort2(string&,string&,string&);char s1[100],s2[100],s3[100];char*p1,*p2,*p3;string r1,r2,r3;cin>>s1>>s2>>s3;r1=string(s1);r2=string(s2);r3=string(s3);p1=s1;p2=s2;p3=s3;sort1(p1,p2,p3);cout<<s1<<endl<<s2<<endl<<...