View Code of Problem 53

#include <stdio.h>
int main()
{
	int number,i,j,k;
	scanf("%d",&number);
	for(i=1;i<=number-1;i++)
	{
		for(j=1;j<=number-i;j++)
		{
			printf(" ");
		}
		for(j=1;j<=2*i-1;j++)printf("*");
		printf("\n");
	}
	for(i=1;i<=2*number-1;i++)printf("*");
	printf("\n");
	for(i=number-1;i>=1;i--)
	{
		for(j=1;j<=number-i;j++)
		{
			printf(" ");
		}
		for(j=1;j<=2*i-1;j++)printf("*");
		printf("\n");
	}
}