定义一个用于计算阶乘的函数jiecheng,该函数参数为整型变量n,返回值...答:x<0)return 0;if(0==x||1==x)return 1;return jiecheng(x-1)*x;}int main(){int m,n,t;printf("输入m的值:",m);scanf("%d",&m);t=jiecheng(m);if(0==t)printf("%d的值输入有误!\n",m);elseprintf("%d! = %d\n",m,t);printf("输入n的值:",n);scanf("%d",...