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Sunday, July 13, 2008

Structural Programming Lab7 5b?

My code on 2X2 matrix.
iostream and iomanip(to look nicer) does not appear, add in yourself.

#include
#include
using namespace std;
int matrix1[2][2], matrix2[2][2], matrix3[2][2];
//function prototypes
int inputfunction1 (int matrix1[2][2]);
int inputfunction2 (int matrix2[2][2]);
int matrixfunction1 (int matrix3[2][2]);

int main()
{
//displaymatrixdiagram ();
cout << "first matrix second matrix third matrix" << endl;
cout << "[0][0] [0][1] [0][0] [0][1] [0][0] [0][1]" << endl;
cout << "[1][0] [1][1] X [1][0] [1][1] = [1][0] [1][1]" << endl;
matrixfunction1 (matrix3);

cout << "first matrix second matrix thrid matrix" << endl;
cout << "[" << setw(3) << matrix1[0][0] << " " << setw(3) << matrix1[0][1] << "] [" << setw(3) << matrix2[0][0] << " " << setw(3) << matrix2[0][1] << "] [" << setw(3) << matrix3[0][0] << " " << setw(3) << matrix3[0][1] << "]" << endl;
cout << "[" << setw(3) << matrix1[1][0] << " " << setw(3) << matrix1[1][1] << "] X [" << setw(3) << matrix2[1][0] << " " << setw(3) << matrix2[1][1] << "] = [" << setw(3) << matrix3[1][0] << " " << setw(3) << matrix3[1][1] << "]" << endl;
return 0;
}

int inputfunction1 (int matrix1[2][2])
{
int r, c;

for (r = 0; r < 2; r++)
{
for (c = 0; c < 2; c++)
{
cout << "Please enter [" << r << "][" << c << "] for first matrice: ";

cin >> matrix1[r][c];
}
}
return(matrix1[2][2]);
}

int inputfunction2 (int matrix2[2][2])
{
int r, c;

for (r = 0; r < 2; r++)
{
for (c = 0; c < 2; c++)
{
cout << "Please enter [" << r << "][" << c << "]for second matrice: ";

cin >> matrix2[r][c];
}
}
return(matrix2[2][2]);
}

int matrixfunction1 (int matrix3[2][2])
{
int r, c;
inputfunction1(matrix1);
inputfunction2(matrix2);

for (r = 0; r < 2; r++)
{
for (c = 0; c < 2; c++)
{
matrix3[r][c] = matrix1[r][0] * matrix2[0][c] + matrix1[r][1] * matrix2[1][c];
//cout << matrix3[r][c] << endl;
}
}
return (matrix3[2][2]);
}
This crap took me 3 hours. Try, you can do it too. =)

; tortured on 10:12 PM =/

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