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The object oriented programming language C++ may be considered a superset of C. But in numerical computations, what are the advantages (or computational features) of C++ over C?

We know how the regular tree walk algorithm works. If you have some values in the tree then the tree walk algorithm prints everything in order. This means all the successor and predecessor are near each other. Explain Why all the successor and predecessors are near each other with the tree walk algorithm. Remember about the situation when there is a sub-tree and when there is no sub-tree.

Would you please help me to find good resources to learn about real time programming in c++?

Thank you in advance.

the complete error is:

"This application has requested the Runtime to terminate it in an unusual way.

Please contact the application's support team for more information."

the tool is kiva. Kiva is a free and open source ground heat transfer calculation tool written in C++ and Kiva is a command line tool.

In matlab I have used imfilter, imresize and many other funcs that are not working with matlab coder ...so is there any other solutions?

I had byte array which was derived from an image , then this array text was encrypted to be saved in database, I want to retrieve this text decrept it then transfer it to byte array again to retrieve the image , how can this be done?

I have written an application on a Android platform. In this app, I'm using OpenGL ES2 and some C++ code with Android NDK. Now, I want to port this app to iOS (iPhone, iPad) platform. I find that IKVM/ MonoTouch or j2ObjC can convert Java application into iOS application. However, in this program, some C++ code and OpenGL are used, so I don't know how to port my program to iOS platform.

Can you help me deal with this problem?

Here are my codes:

if i want to do this addition 11+22 upon clicking on = button it should give me 33 but it does not work. the calculator must be able to perform addition correctly please help?

ActivityMain <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent" >

<TextView

android:id="@+id/textView1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_centerHorizontal="true"

android:layout_centerVertical="true"

tools:context=".MainActivity" />

<Button

android:id="@+id/btn1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_below="@+id/editText1"

android:layout_marginTop="36dp"

android:text="1"

android:onClick="btn1Click"/>

<Button

android:id="@+id/btn2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBaseline="@+id/btn1"

android:layout_alignBottom="@+id/btn1"

android:layout_toRightOf="@+id/btn1"

android:text="2"

android:onClick="btn2Click" />

<Button

android:id="@+id/btn3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBaseline="@+id/btn2"

android:layout_alignBottom="@+id/btn2"

android:layout_toRightOf="@+id/btn2"

android:text="3"

android:onClick="btn3Click"/>

<Button

android:id="@+id/btn4"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_below="@+id/btn1"

android:layout_marginTop="15dp"

android:text="4" />

<Button

android:id="@+id/btn5"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBaseline="@+id/btn4"

android:layout_alignBottom="@+id/btn4"

android:layout_toRightOf="@+id/btn4"

android:text="5" />

<Button

android:id="@+id/btnAdd"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBottom="@+id/btn3"

android:layout_alignParentRight="true"

android:text="+"

android:onClick="btnAddClick"/>

<Button

android:id="@+id/btnSub"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBottom="@+id/btn5"

android:layout_alignParentRight="true"

android:text="-"

android:onClick="btnSubClick"/>

<Button

android:id="@+id/btnDiv"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBottom="@+id/textView1"

android:layout_alignParentRight="true"

android:text="/" />

<Button

android:id="@+id/btnMul"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:layout_below="@+id/btnDiv"

android:layout_marginTop="14dp"

android:text="*" />

<Button

android:id="@+id/btnEqual"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:layout_below="@+id/btnMul"

android:layout_marginTop="15dp"

android:text="="

android:onClick="btnEq"/>

<TextView

android:id="@+id/textView2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentRight="true"

android:layout_below="@+id/editText1"

android:gravity="right"

android:textAppearance="?android:attr/textAppearanceLarge" />

public class MainActivity extends Activity {

Button btn1;

Button btn2;

Button btn3;

Button btnAdd;

Button btnSub;

String btn_val1;

String btn_val2;

String btn_val3;

String btn_valAdd;

String btn_valSub;

EditText edit_text;

TextView textview;

int res;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

}

public void btn1Click(View view)

{

btn1 = (Button) findViewById(R.id.btn1);

btn_val1 = btn1.getText().toString();

textview = (TextView) findViewById(R.id.textView2);

textview .append(btn_val1);

}

public void btn2Click(View view)

{

btn2 = (Button) findViewById(R.id.btn2);

btn_val2 = btn2.getText().toString();

textview = (TextView) findViewById(R.id.textView2);

textview .append(btn_val2);

}

public void btn3Click(View view)

{

btn3 = (Button) findViewById(R.id.btn3);

btn_val3 = btn3.getText().toString();

textview = (TextView) findViewById(R.id.textView2);

textview.append(btn_val3);

}

public void btnAddClick(View view)

{

btnAdd = (Button) findViewById(R.id.btnAdd);

//res = Integer.parseInt(btn_val1) + Integer.parseInt(btn_val2) + Integer.parseInt(btn_val3);

btn_valAdd = btnAdd.getText().toString();

textview = (TextView) findViewById(R.id.textView2);

textview.append(btn_valAdd);

}

public void btnSubClick(View view)

{

btnSub = (Button) findViewById(R.id.btnSub);

//res = Integer.parseInt(btn_val1) - Integer.parseInt(btn_val2) - Integer.parseInt(btn_val3);

btn_valSub = btnSub.getText().toString();

textview = (TextView) findViewById(R.id.textView2);

textview.append(btn_valSub);

}

public void btnEq(View view)

{

textview = (TextView) findViewById(R.id.textView2);

if(btnAdd != null)

{

if(btn_val1 != null && btn_val2 != null )

{

res = Integer.parseInt(btn_val1) + Integer.parseInt(btn_val2);

textview.setText(String.valueOf(res));

}

else if(btn_val1 != null && btn_val3 != null)

{

res = Integer.parseInt(btn_val1) + Integer.parseInt(btn_val3);

textview.setText(String.valueOf(res));

}

else if(btn_val2 != null && btn_val3 != null)

{

res = Integer.parseInt(btn_val2) + Integer.parseInt(btn_val3);

textview.setText(String.valueOf(res));

}

else if(btn_val1 != null && btn_val2 != null && btn_val3 != null)

{

res = Integer.parseInt(btn_val1) + Integer.parseInt(btn_val2) + Integer.parseInt(btn_val3);

textview.setText(String.valueOf(res));

}

}

else if(btnSub != null)

{

res = Integer.parseInt(btn_val1) - Integer.parseInt(btn_val2) - Integer.parseInt(btn_val3);

textview.setText(String.valueOf(res));

}

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.activity_main, menu);

return true;

}

}

While working on matlab to C conversion, I have encountered a problem which involves result mismatch. The function I've been trying to validate is an SVD function with its corresponding matlab built-in function. The result that is obtained from the vector of singular values (the last n by n matrix) in C implementation produces a result with column mismatch as compared to its corresponding matlab built-in function. In some of the cases the obtained result  produces opposite signed values as well.

I have attached the c implementation, I kindly ask for your cooperation in pinpointing the problem which could help me find a solution.

I want to know if there is any IDE for C/C++ which could help in easy debugging of a large C/C++ project in Mac.

I have tried Netbeans but it doesn't help although there is debugging process there but as it encounters any error it stops all of a sudden without giving any details about the line number where error is occurring.