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#include <iostream>
#include <string>
#define ROW_PAD 5
#define COL_PAD 8
int main(void)
{
using std::cout; using std::endl;
using std::cin; using std::string;
const int rows = ROW_PAD * 2 + 3; // empty + first/last line + greeting
string name;
cout << "Enter your name: ";
cin >> name;
const string greeting = "Hello " + name + "!";
const string::size_type cols = COL_PAD * 2 + greeting.size() + 2;
cout << endl;
/*
* Loop invariant:
* -We've written 'r' rows so far
*/
const string col_blank(COL_PAD, ' ');
const string row_blank(cols - 2, ' ');
for (int r = 0; r != rows; r++) {
string::size_type c = 0;
/*
* Loop invariant:
* - We've written 'c' columns so far
*/
while (c != cols) {
if (r == ROW_PAD + 1 && c == 1) {
cout << col_blank << greeting << col_blank;
c += greeting.size() + (col_blank.size() * 2);
} else {
if (r == 0 || r == rows - 1 ||
c == 0 || c == cols - 1) {
cout << "*";
c++;
} else {
cout << row_blank;
c += row_blank.size();
}
}
}
cout << endl;
}
return 0;
}
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