View Compilation Error

0_0_17368796_21606.cpp: In function 'void dfs(int, int)':
0_0_17368796_21606.cpp:7:11: error: 'maze' cannot be used as a function
  maze(i, j) = '*';
           ^
0_0_17368796_21606.cpp:14:28: error: expected primary-expression before '=' token
    if(0 <= nx && nx < n && = <= ny && ny < m && maze[i][j] == '@')
                            ^
0_0_17368796_21606.cpp:14:30: error: expected primary-expression before '<=' token
    if(0 <= nx && nx < n && = <= ny && ny < m && maze[i][j] == '@')
                              ^
0_0_17368796_21606.cpp: In function 'int main()':
0_0_17368796_21606.cpp:22:31: error: expected ')' before '{' token
  while(~scanf("%d%d", &n, &m) {
                               ^