lind6-7.c

谭浩强第二版的课后习题的答案的源程序

#include<stdio.h>
void main()
{
	int f,t,n=1,d;  //f:factor t:temp d:denominator n:number
	while(n>=1&&n<=1000)
	{
		d=1;
		t=0;
		for(d=1;d<=n;d++)
		{
			if(n%d==0)
			t=t+d;
		}

		if(t==2*n||t==1)
		{
			printf("\n\n%d",n);
			printf(" its factors are ");
			for(d=n;d>0;d--)
			{
			f=n/d;
			if((n%d)==0&&f!=n||t==1)
			printf("%d ",f);
			}
		}
		n++;
	}
	printf("\n");
}