[C exercise] print diamond

example ： Input 8, Print the following diamond .（ The number entered is the number of rows in the upper half of the diamond ）

We can regard the diamond as two parts , Pictured .

At this time, we can print in two parts , Suppose the input number is line, Then the number of lines in the upper part is line, The number of lines in the following part is line -1.

The number of spaces printed on each line in the upper part is as follows ：

The number of asterisks printed on each line in the upper part is as follows ：

The number of spaces printed in the lower part is as follows ：

The number of asterisks printed on each line in the lower part is as follows ：

  Based on these data , You can write the code .

#include<stdio.h>

int main()
{
	int line = 0;
	scanf("%d", &line);
    // The first half 
	for (int i = 0; i < line; i++)
	{
		for (int j = 0; j < line-i-1; j++)
			printf(" ");
		for (int j = 0; j < 2*i+1; j++)
			printf("*");
		printf("\n");
	}
    // The second part of 
	for (int i = 0; i < line - 1; i++)
	{
		for (int j = 0; j < 1 + i; j++)
			printf(" ");
		for (int j = 0; j < 2*(line-1-i)-1; j++)
			printf("*");
		printf("\n");
	}
	return 0;
}