阶乘.cpp

雅可比迭代等一些程序

#include<iostream.h>
int f(int n)
{int a;
if(n<0)
cout<<"wrong";
else if(n==0||n==1)
a=1;
else
a=n*f(n-1);
return(a);
}
void main()
{int x;
cout<<"input data:";
cin>>x;
cout<<f(x)<<endl;
}