View Compilation Error

0_0_27058608_25623.cpp: In function 'int main()':
0_0_27058608_25623.cpp:55:9: error: 'i' was not declared in this scope
    for (i = 0; i < n; i++)
         ^
0_0_27058608_25623.cpp:57:10: error: 'j' was not declared in this scope
     for (j = 0; j < n; j++)
          ^
0_0_27058608_25623.cpp:58:19: error: 'box' was not declared in this scope
      printf("%c", box[i][j]);
                   ^