SQL with Manoj

Q6. Program Matrix manipulation (menu based):

for following Matrix manipulations:
  i) Add two matrices
 ii) Multiply two matrices
iii) Find the difference
iv) Find the sum of Rows and Sum of Cols.

… from College notes (BCA/MCA assignments):

#include <iostream.h>
#include <conio.h>
#include <stdlib.h>

void Init_Matrix (int [][3], int [][3]);
void Disp_Matrix (int [][3], int [][3]);
void Add_Matrix  (int [][3], int [][3]);
void Sub_Matrix  (int [][3], int [][3]);
void Mult_Matrix (int [][3], int [][3]);
void Sum_R_C     (int [][3], int [][3]);

void main(){
	int mat1[3][3], mat2[3][3];
	int ch;
	clrscr();
	cout<<"\n Matrix Operation of Order (3*3):- \n";
	Init_Matrix(mat1, mat2);
	while(1){
		clrscr();
		Disp_Matrix(mat1, mat2);
		cout<<"\n Matrix Operation of Order (3*3):- \n";
		cout<<"\n 1 -> Change Elements of Matrices.";
		cout<<"\n 2 -> Add Matrices.";
		cout<<"\n 3 -> Subtract Matrices.";
		cout<<"\n 4 -> Multiply Matrices.";
		cout<<"\n 5 -> Sum of ROWs n COLs.";
		cout<<"\n 6 -> Exit.";
		cout<<"\n Enter your choice: ";
		cin>>ch;
		switch(ch){
			case 1:
				Init_Matrix(mat1, mat2);
				break;
			case 2:
				Add_Matrix(mat1, mat2);
				break;
			case 3:
				Sub_Matrix(mat1, mat2);
				break;
			case 4:
				Mult_Matrix(mat1, mat2);
				break;
			case 5:
				Sum_R_C(mat1, mat2);
				break;
			case 6:
				exit(1);
			default:
				cout<<"\n Enter Correct Choice.";
			} // end of switch.
		getch();
		} // end of while.
	} // end of main.

void Init_Matrix(int mat1[][3], int mat2[][3]){
	cout<<"\n Enter the Elments of First Matrix: ";
	for(int i=0; i<3; i++)
		for(int j=0; j<3; j++)
			cin>>mat1[i][j];
	cout<<"\n Enter the Elments of First Matrix: ";
	for(i=0; i<3; i++)
		for(j=0; j<3; j++)
			cin>>mat2[i][j];
	}

void Disp_Matrix(int mat1[][3], int mat2[][3]){
	cout<<"\n First matrix is:- \n";
	for(int i=0; i<3; i++){
		for(int j=0; j<3; j++)
			cout<<" "<<mat1[i][j];
		cout<<endl;
		}

	cout<<"\n Second matrix is:- \n";
	for(i=0; i<3; i++){
		for(int j=0; j<3; j++)
			cout<<" "<<mat2[i][j];
		cout<<endl;
		}
	}

void Add_Matrix(int mat1[][3], int mat2[][3]){
	int tot[3][3];
	for(int i=0; i<3; i++)
		for(int j=0; j<3; j++)
			tot[i][j] = mat1[i][j] + mat2[i][j];

	cout<<"\n Addition of 2 Matrices:- \n";
	for(i=0; i<3; i++){
		for(int j=0; j<3; j++)
			cout<<" "<<tot[i][j];
		cout<<endl;
		}
	}


void Sub_Matrix(int mat1[][3], int mat2[][3]){
	int tot[3][3];
	for(int i=0; i<3; i++)
		for(int j=0; j<3; j++)
			tot[i][j] = mat1[i][j] - mat2[i][j];

	cout<<"\n Subtraction of 2 Matrices:- \n";
	for(i=0; i<3; i++){
		for(int j=0; j<3; j++)
			cout<<" "<<tot[i][j];
		cout<<endl;
		}
	}

void Mult_Matrix(int mat1[][3], int mat2[][3]){
	int tot[3][3];
	for(int i=0; i<3; i++)
		for(int j=0; j<3; j++){
			tot[i][j]=0;
			for(int k=0; k<3; k++)
				tot[i][j] = tot[i][j] + 
 (mat1[i][k]*mat2[k][j]);
			}
	cout<<"\n Multiplication of 2 Matrices:- \n";
	for(i=0; i<3; i++){
		for(int j=0; j<3; j++)
			cout<<" "<<tot[i][j];
		cout<<endl;
		}
	}

void Sum_R_C(int mat1[][3], int mat2[][3]){
	int row=0, col=0;
	cout<<"\n Sum of ROWs and COLs :- \n";
	cout<<"\n First Matrix :- \n";
	// Sum of row of mat1.
	for(int i=0; i<3; i++){
		for(int j=0; j<3; j++){
			cout<<"  "<<mat1[i][j];
			row = row + mat1[i][j];
			}
		cout<<" -  "<<row;
		row = 0;
		cout<<endl;
		}
	cout<<"\n  |  |  | \n";
	// Sum of col of mat1.
	for(i=0; i<3; i++){
		for(int j=0; j<3; j++)
			col = col + mat1[j][i];
		cout<<"  "<<col;
		col = 0;
		}

	cout<<"\n\n Second Matrix :- \n";
	// Sum of row of mat2.
	for(i=0; i<3; i++){
		for(int j=0; j<3; j++){
			cout<<"  "<<mat2[i][j];
			row = row + mat2[i][j];
			}
		cout<<" -  "<<row;
		cout<<endl;
		row = 0;
		}
	cout<<"\n  |  |  | \n";
	// Sum of col of mat2.
	for(i=0; i<3; i++){
		for(int j=0; j<3; j++)
			col = col + mat2[j][i];
		cout<<"  "<<col;
		col = 0;
		}
	}

Output:

Matrix Operation of Order (3*3):-

Enter the Elments of First Matrix: 2 1 3 5 4 9 8 6 7

Enter the Elments of First Matrix: 3 1 4 2 5 6 9 8 0

First matrix is:-
2 1 3
5 4 9
8 6 7

Second matrix is:-
3 1 4
2 5 6
9 8 0

Matrix Operation of Order (3*3):-
1 -> Change Elements of Matrices.
2 -> Add Matrices.
3 -> Subtract Matrices.
4 -> Multiply Matrices.
5 -> Sum of ROWs n COLs.
6 -> Exit.
Enter your choice: 2

Addition of 2 Matrices:-
5 2 7
7 9 15
17 14 7

First matrix is:-
2 1 3
5 4 9
8 6 7

Second matrix is:-
3 1 4
2 5 6
9 8 0

Matrix Operation of Order (3*3):-
1 -> Change Elements of Matrices.
2 -> Add Matrices.
3 -> Subtract Matrices.
4 -> Multiply Matrices.
5 -> Sum of ROWs n COLs.
6 -> Exit.
Enter your choice: 3
Subtraction of 2 Matrices:-
-1 0 -1
3 -1 3
-1 -2 7

First matrix is:-
2 1 3
5 4 9
8 6 7

Second matrix is:-
3 1 4
2 5 6
9 8 0

Matrix Operation of Order (3*3):-
1 -> Change Elements of Matrices.
2 -> Add Matrices.
3 -> Subtract Matrices.
4 -> Multiply Matrices.
5 -> Sum of ROWs n COLs.
6 -> Exit.
Enter your choice: 4

Multiplication of 2 Matrices:-
35 31 14
104 97 44
99 94 68

1 -> Change Elements of Matrices.
2 -> Add Matrices.
3 -> Subtract Matrices.
4 -> Multiply Matrices.
5 -> Sum of ROWs n COLs.
6 -> Exit.
Enter your choice: 5

Sum of ROWs and COLs :-

First Matrix :-
2 1 3 – 6
5 4 9 – 18
8 6 7 – 21
| | |
15 11 19

Second Matrix :-
3 1 4 – 8
2 5 6 – 13
9 8 0 – 17
| | |
14 14 10