Determinant Solver

[adityawkhare]

// DETERMINANTS by a.w.k
#include<conio.h>
#include<iostream.h>
#include<stdlib.h>


int main()
{
	int ex,choice,a,b,c,d,e,f,g,h,i,ans;
	char repeat;
	clrscr();


   do{
	cout<<"\n Determinant Solver [with Explaination]";
	cout<<"\n Enter your choice...";
	cout<<"\n\n Press [1] for 2x2....\n \n Press [2] for 3x3....";
	cin>>choice;
	clrscr();


	if(choice==1)
	{
	 cout<<"\n Enter 4 values of Determinant....";
	 cin>>a>>b>>c>>d;
	 clrscr();

	 ans=(a*d-b*c);
	 cout<<"\n Entered determinant is...\n";
	 cout<<" \n|         |";
	 cout<<" \n|  "<<a<<"   "<<b<<"  | ";
	 cout<<" \n|  "<<c<<"   "<<d<<"  |  =  "<<ans;
	 cout<<" \n|         | ";



	 cout<<"\n Answer is "<<ans;


	 cout<<"\n for Explaination press [1]....";
	 cin>>ex;

	  if(ex==1)
		{
		 cout<<"\n\n\n\n ---------------------Explaination----------------------";
		 cout<<"\n="<<a<<" x "<<d<<" - "<<b<<" x "<<c;
		 cout<<"\n="<<a*d<<" - "<<b*c;
		 cout<<"\n="<<a*d-b*c;
		 cout<<"\n="<<ans;

		}
	  else
		{
		goto again1;
		}

	}

	else if(choice==2)

	{

	 cout<<"\n Enter 9 values of Determinant....";
	 cin>>a>>b>>c>>d>>e>>f>>g>>h>>i;


	 clrscr();
	 cout<<"\n Entered determinant is.....\n";
	 cout<<"|             | ";
	 cout<<" \n|  "<<a<<"   "<<b<<"   "<<c<<"  | ";
	 cout<<" \n|  "<<d<<"   "<<e<<"   "<<f<<"  | ";
	 cout<<" \n|  "<<g<<"   "<<h<<"   "<<i<<"  | ";
	 cout<<" \n|             | ";

	 ans=a*(e*i-f*h)-b*(d*i-f*g)+c*(d*h-g*e);
	 cout<<"\n Answer is "<<ans;

	 cout<<"\n \nFormula   =a (e*i - f*h) - b (d*i - f*g) + c (d*e - g*h)";

	 cout<<"\n For Explaination press [1]...";
	 cin>>ex;

	      if(ex==1)
	      {

		cout<<"\n\n ---------------------Explaination------------------------\n\n";

		cout<<"="<<a<<" ("<<e<<" x "<<i<<" - "<<f<<" x "<<h<<") - "<<b<<" ("<<d<<" x "<<i<<" - "<<f<<" x "<<g<<")  + "<<c<<" ("<<d<<" x "<<h<<" - "<<g<<" x "<<e<< ") " ;
		cout<<"\n\n="<<a<<" ("<<e*i<<" - "<<f*h<<") - "<<b<<"("<<d*i<<"-"<<f*g<<")  + "<<c<<" ("<<d*h<<"-"<<g*e<< ") ";
		cout<<"\n\n="<<a<<" ("<<e*i - f*h<<") - "<<b<<"("<<d*i - f*g<<")  + "<<c<<" ("<<d*h - g*e<< ") ";
		cout<<"\n\n="<<a*(e*i-f*h)<<"+"<<-b*(d*i-f*g)<<""<<c*(d*h-g*e);
		cout<<"\n\n="<<ans;

	      }

	      else
	      {
	      goto again1;
	      }

	}

	else
		cout<<"\n Invalid Choice";


       again1:
       cout<<"\n________________________________";
       cout<<"\n\n\n\n [R]epeat or [E]xit...???";
       cout<<"\n________________________________";
       cin>>repeat;
       clrscr();


   }
   while(repeat!='e');

   clrscr();

   cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\tan 'Aditya \a Khare \a Production'";

	getch();

}

[Captain Jake]

// DETERMINANTS by a.w.k
#include<conio.h>
#include<iostream.h>
#include<stdlib.h>


int main()
{
	int ex,choice,a,b,c,d,e,f,g,h,i,ans;
	char repeat;
	clrscr();


   do{
	cout<<"\n Determinant Solver [with Explaination]";
	cout<<"\n Enter your choice...";
	cout<<"\n\n Press [1] for 2x2....\n \n Press [2] for 3x3....";
	cin>>choice;
	clrscr();


	if(choice==1)
	{
	 cout<<"\n Enter 4 values of Determinant....";
	 cin>>a>>b>>c>>d;
	 clrscr();

	 ans=(a*d-b*c);
	 cout<<"\n Entered determinant is...\n";
	 cout<<" \n|         |";
	 cout<<" \n|  "<<a<<"   "<<b<<"  | ";
	 cout<<" \n|  "<<c<<"   "<<d<<"  |  =  "<<ans;
	 cout<<" \n|         | ";



	 cout<<"\n Answer is "<<ans;


	 cout<<"\n for Explaination press [1]....";
	 cin>>ex;

	  if(ex==1)
		{
		 cout<<"\n\n\n\n ---------------------Explaination----------------------";
		 cout<<"\n="<<a<<" x "<<d<<" - "<<b<<" x "<<c;
		 cout<<"\n="<<a*d<<" - "<<b*c;
		 cout<<"\n="<<a*d-b*c;
		 cout<<"\n="<<ans;

		}
	  else
		{
		goto again1;
		}

	}

	else if(choice==2)

	{

	 cout<<"\n Enter 9 values of Determinant....";
	 cin>>a>>b>>c>>d>>e>>f>>g>>h>>i;


	 clrscr();
	 cout<<"\n Entered determinant is.....\n";
	 cout<<"|             | ";
	 cout<<" \n|  "<<a<<"   "<<b<<"   "<<c<<"  | ";
	 cout<<" \n|  "<<d<<"   "<<e<<"   "<<f<<"  | ";
	 cout<<" \n|  "<<g<<"   "<<h<<"   "<<i<<"  | ";
	 cout<<" \n|             | ";

	 ans=a*(e*i-f*h)-b*(d*i-f*g)+c*(d*h-g*e);
	 cout<<"\n Answer is "<<ans;

	 cout<<"\n \nFormula   =a (e*i - f*h) - b (d*i - f*g) + c (d*e - g*h)";

	 cout<<"\n For Explaination press [1]...";
	 cin>>ex;

	      if(ex==1)
	      {

		cout<<"\n\n ---------------------Explaination------------------------\n\n";

		cout<<"="<<a<<" ("<<e<<" x "<<i<<" - "<<f<<" x "<<h<<") - "<<b<<" ("<<d<<" x "<<i<<" - "<<f<<" x "<<g<<")  + "<<c<<" ("<<d<<" x "<<h<<" - "<<g<<" x "<<e<< ") " ;
		cout<<"\n\n="<<a<<" ("<<e*i<<" - "<<f*h<<") - "<<b<<"("<<d*i<<"-"<<f*g<<")  + "<<c<<" ("<<d*h<<"-"<<g*e<< ") ";
		cout<<"\n\n="<<a<<" ("<<e*i - f*h<<") - "<<b<<"("<<d*i - f*g<<")  + "<<c<<" ("<<d*h - g*e<< ") ";
		cout<<"\n\n="<<a*(e*i-f*h)<<"+"<<-b*(d*i-f*g)<<""<<c*(d*h-g*e);
		cout<<"\n\n="<<ans;

	      }

	      else
	      {
	      goto again1;
	      }

	}

	else
		cout<<"\n Invalid Choice";


       again1:
       cout<<"\n________________________________";
       cout<<"\n\n\n\n [R]epeat or [E]xit...???";
       cout<<"\n________________________________";
       cin>>repeat;
       clrscr();


   }
   while(repeat!='e');

   clrscr();

   cout<<"\n\n\n\n\n\n\n\n\n\n\n\n\tan 'Aditya \a Khare \a Production'";

	getch();

}

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