Answer to Question #293463 in C++ for Bimbi

Question

How to fix this error?

void reflexive(int a[], int sizeOfA, int b[], int sizeOfB){

int i, j;

bool test;

bool hold = true;

for(i = 0; i < sizeOfA; i++)

{

if(hold == true)

{

for(j = 0; j < sizeOfB;)

{

if(b[j]==a[i] && b[j+1]==a[i])

{

hold = true;

break;

}

else

{

hold = false;

j++;

}

}

}

}

if(hold == true)

{

test = true;

cout << "Reflextive - Yes" << endl;

}

else

{

test = false;

cout << "Reflextive - No" << endl;

}

}

Answer 1

class Relation
{
private:
bool** mMatrix;
int mSize;


void init()
{
mMatrix = new bool*[mSize];
for (int i = 0; i < mSize; i++)
{
mMatrix[i] = new bool[mSize];
}
}


public:
Relation(int size)
{
mSize = size;
init();
}
/****************************************************************************
* Relation Member Functions
***************************************************************************/
/****************************************************************************
*  R is Reflexive if M[i][i] = 1 for all i
***************************************************************************/
bool Relation::isReflexive()
{
for (int i = 0; i < mSize; i++)
{
if (!mMatrix[i][i])
return false;
}
return true;
}


/****************************************************************************
*  R is Irreflexive if M[i][i] = 0 for all i
***************************************************************************/
bool Relation::isIrreflexive()
{
for (int i = 0; i < mSize; i++)
{
if (mMatrix[i][i])
return false;
}
return true;
}


/****************************************************************************
*  R is Nonreflexive if R is either not reflexive or not irreflexive. There
* is a more efficient way to test for nonreflexive, but for learning purposes
* I chose this inefficient way.
***************************************************************************/
bool Relation::isNonreflexive()
{
return (!(isReflexive() || isIrreflexive()));
}