int main(void)
{
int i, j, k;
for (i = 1; i <= 4; i++)
{
for (k = i; k >= 1; k--)
printf("*");
for (j = 4 - i; j >= 1; j--)
printf(" ");
printf("\n");
}//左對齊
printf("左對齊\n");
for (i = 3; i >= 0; i--)
{
for (k = i; k >= 1; k--)
printf(" ");
for (j = 1; j <= 4 - i; j++)
printf("*");
printf("\n");
}//右對齊
printf("右對齊\n");
for (i = 4; i >= 1; i--)
{
for (k = i; k >= 1; k--)
printf("*");
for (j = 0; j <= 3; j++)
printf(" ");
printf("\n");
}//倒左對齊
printf("倒左對齊\n");
for (i = 4; i >= 1; i--)
{
for (k = 4 - i; k >= 1; k--)
printf(" ");
for (j = i; j >= 1; j--)
printf("*");
printf("\n");
}//倒右對齊
printf("倒右對齊\n");
return 1;
}