How to build an triangle with C

triangle.c

#include <stdio.h>

int main()
{
	int i,space,rows,k=0;
	printf("Enter the number of rows: ");
	scanf("%d",&rows);
	for(i=1;i<=rows;++i)
	{
		for(space=1;space<=rows-i;++space)
		{
			printf(" ");
		}
		while(k!=2*i-1)
		{
			printf("*");
			++k;
		}
		k=0;
		printf("\n");
	}
	return 0;
}