用C语言编写程序,求出1000的阶乘.(利用数组)答:{ int Num;register int i,j,k,flag;register unsigned int n,m,pc;unsigned char str_n[5],result_0[N],result_1[N];void fun_print_result(char *result,int flag);int fun_mul(char *a,char *b,char *c,int flag);printf("输入计算其阶乘的数:Num = ");scanf("%d",&Num);...