string array reverse

[rpapaiof]

i have this form but i want more compact and simple form
string str,
int i;
cout<<"\n Enter any string to reverse ";
cin>>str;
cout<<"\n The string in reverse is ";

length=strlen(str);
for(i=length;i>0;i--)
{
cout<<str[i];
}

or you can do it this way

string str,str2,
int i;
cout<<"\n Enter any string to reverse ";
cin>>str;
str2="";

for(i=length;i>0;i--)
{
str2=strcat(str2,str[i])
}

cout<<"\n The string in reverse is "<<str2<<endl;