C++: Usando While dentro do while

#include <iostream>

using namespace std;

int main()
{
    char caracter;
    int i,j;          //contador

    i = 1;
    j = 1;

    while( j<= 10){
      while(i <= 80){
        caracter = 176;
        cout << caracter;
        i++;
      }
      j++;
      i=1;
      cout << endl;
    }

    return 0;
}