Okay...

Code:
int   widthOfAnythingElse = 0,
      widthOfLine = 0,
      stars = 0;

/* I want a line width of 10 in total, with 3 stars */
stars = 3;
widthOfLine = 10;
widthOfAnythingElse = widthOfLine - stars;

for(i = 0; i < widthOfAnythingElse; i++)
{
   putchar(' ');
}

for(i = 0; i < stars; i++)
{
   putchar('*');
}

putchar('\n');
Of course there are many ways to do it