习题10-2 递归求阶乘和 (15 分)

题目链接：
习题10-2 递归求阶乘和 (15 分)

#include 

double fact( int n );
double factsum( int n );

int main()
{
    int n;

    scanf("%d",&n);
    printf("fact(%d) = %.0fn", n, fact(n));
    printf("sum = %.0fn", factsum(n));

    return 0;
}


double fact(int n){
	if(n==1||n==0){
		return 1;
	}else{
		return n*fact(n-1);
	}
}

double factsum(int n){
	if(n==0){
		return 0;
	}else if(n==1){
		return 1;
	}else{
		return fact(n)+factsum(n-1);
	}
}