Question: The program outputs various asterisks (7)

Print? /* Start the comments in the program header (to avoid any problems encountered during the submission of blog posts, the slash used to indicate that the comments have been deleted)
* Copyright and version Declaration of the program
* All rights reserved.
* File name: txt. c
* Author: liuyongshui
* Question: the editing program outputs various asterisks.
* Question
* Completion date: January 1, April 10, 2013
* Version No.: V1.0
*/

# Include <stdio. h>

Const int num = 5;

Int main ()
{
Int I;
Int j;

// Print the upper triangle
For (I = 1; I <num; I ++)
{
For (j = 1; j <2 * num; j ++)
{
If (j> = num-I + 1 & j <= num + i-1)
{
Printf ("*");
}
Else
{
Printf ("");
}
}
Printf ("\ n ");
}

// Print the lower triangle
For (I = num; I> 0; I --)
{
For (j = 1; j <2 * num; j ++)
{
If (j> = num-I + 1 & j <= num + i-1)
{
Printf ("*");
}
Else
{
Printf ("");
}
}
Printf ("\ n ");
}

Return 0;
}

/* Start the comments in the program header (to avoid any problems encountered during the submission of blog posts, the slash used to indicate that the comments have been deleted)
* Copyright and version Declaration of the program
* All rights reserved.
* File name: txt. c
* Author: liuyongshui
* Question: the editing program outputs various asterisks.
* Question:
* Completion date: January 1, April 10, 2013
* Version No.: V1.0
*/

# Include <stdio. h>

Const int num = 5;

Int main ()
{
Int I;
Int j;

// Print the upper triangle
For (I = 1; I <num; I ++)
{
For (j = 1; j <2 * num; j ++)
{
If (j> = num-I + 1 & j <= num + i-1)
{
Printf ("*");
}
Else
{
Printf ("");
}
}
Printf ("\ n ");
}

// Print the lower triangle
For (I = num; I> 0; I --)
{
For (j = 1; j <2 * num; j ++)
{
If (j> = num-I + 1 & j <= num + i-1)
{
Printf ("*");
}
Else
{
Printf ("");
}
}
Printf ("\ n ");
}

Return 0;
}