#include<iostream> #include <cstdlib> using namespace std; int print() { cout<<"************************************************"<<endl; cout<<"* 欢迎使用本软件 *"<<endl; cout<<"************************************************"<<endl<<endl; cout<<"请输入三阶行列式(以回车键换行):"<<endl; } int main() { int a,b,c,d,e,f,j,h,i; print(); while(cin>>a>>b>>c>>d>>e>>f>>j>>h>>i) { cout<<endl; cout<<"行列式结果为:"; cout<<a*e*i+d*h*c+b*f*j-c*e*j-f*h*a-b*d*i<<endl<<endl; system("pause"); system("cls"); print(); } }