Im having issues trying to get this to work. I think the problem for my Meet and Join functions is its printing out the C array inititalized to all 0's and not the modified C array after all the calculations have been done. Also, I don't think my for loop is comparing all the ordered pairs in the tables...

Heres what im trying to do:

I'm taking ordered pairs and translating it into a boolean matrix so for example input:

A=
1 2
1 3
2 1
2 2
3 2
3 3

B=
1 1
1 2
2 2
3 1
3 3

Boolean Matrix for A=

1 2 3
1 0 1 1
2 1 1 0
3 0 1 1

Boolean Matrix for B=

1 2 3
1 1 1 0
2 0 1 0
3 0 0 1

* parenthesis numbers are the row and column numbers

* a 1 is placed to an ordered pair specified. If the ordered pair is not specified, its a 0

``````#include <iostream>
#include <iomanip>
using namespace std;

void MatrixConverter(int x);
void MatrixPrinter(int x);

void Meet(int A, int B);
void Join(int A, int B);

int main()
{
int Matrix_A = {{0}};
int Matrix_B = {{0}};

MatrixConverter(Matrix_A);
MatrixConverter(Matrix_B);

Meet(Matrix_A, Matrix_B);

return 0;
}

void Meet(int A, int B)
{
int C = {{0}};

for (int i = 0; i < 3; i++)
{
for(int j = 0; j < 3; j++)
C[i][j] = A[i][j] && B[i][j];
}

cout << "A ^ B" << endl;
MatrixPrinter(C);
}

void Join(int A, int B)
{
int C = {{0}};

for (int i = 0; i < 3; i++)
{
for(int j = 0; j < 3; j++)
C[i][j] = A[i][j] || B[i][j];
}

cout << "A v B" << endl;
MatrixPrinter(C);
}

void MatrixConverter(int x)
{
int C = {{0}};
int NumPairs;

int k;
int j;

cout <<"Enter the number of ordered pairs? ";
cin >> NumPairs;
cout << endl;

for(int i = 0; i < NumPairs; i++)
{
cout << "Enter first element of ordered pair " << i + 1 << ": ";
cin >> k;

cout << "Enter second element of ordered pair " << i + 1 << ": ";
cin >> j;

cout << endl;

C[k-1][j-1] = 1;
}

MatrixPrinter(C);
}

void MatrixPrinter(int x)
{
cout << "  1 2 3  " << endl;
cout << "1" << setw(2) << x << setw(2) << x << setw(2) << x << endl;
cout << "2" << setw(2) << x << setw(2) << x << setw(2) << x << endl;
cout << "3" << setw(2) << x << setw(2) << x << setw(2) << x << endl;
cout << endl;
}``````

Nowhere are you modifying the two matrices declared in `main()` -- they remain zero-initialized throughout the program. Remedy this by deleting the local `int C` matrix in the `MatrixConverter()` and modify the passed-in `x` matrix instead.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, learning, and sharing knowledge.