title: String matrix input output
body: <p>I want to make a matrix of strings in C Programming language 
  this is my code </p>
  
  <pre><code>void main()
  {
      char Data[10][3][20];
      int i=0;
      int j=0;
      for (i=0;i&lt;10;i++)
      {
          for (j=0;j&lt;3;j++)
          {
              Data[i][j]="aa";
          }
      }
      for (i=0;i&lt;10;i++)
      {
          for (j=0;j&lt;3;j++)
          {
  
              printf("%s",Data[i][j]);
          }
      }
      printf("Done");
      scanf("%d",&amp;i);
  }
  </code></pre>
  
  <p>the error am having is : <code>assignment to expression with array type</code>
  please explain to me what am doing wrong because this is a prototype am trying to use in my original code that is to make a data base of "username,Password,level"</p>
  
  <p>thank you inadvance.</p>