Programming Code Interview Questions
Questions Answers Views Company eMail

Is there any difference between the two declarations, 1. int foo(int *arr[]) and 2. int foo(int *arr[2])

1 5069

What is the subtle error in the following code segment? void fun(int n, int arr[]) { int *p=0; int i=0; while(i++ 1 4568


What is wrong with the following code? int *foo() { int *s = malloc(sizeof(int)100); assert(s != NULL); return s; }

1 4037

What is the hidden bug with the following statement? assert(val++ != 0);

1 5156

void main() { int *i = 0x400; // i points to the address 400 *i = 0; // set the value of memory location pointed by i; }

2 4647

#define assert(cond) if(!(cond)) \ (fprintf(stderr, "assertion failed: %s, file %s, line %d \n",#cond,\ __FILE__,__LINE__), abort()) void main() { int i = 10; if(i==0) assert(i < 100); else printf("This statement becomes else for if in assert macro"); }

1 7053

Is the following code legal? struct a { int x; struct a b; }

1 3949

Is the following code legal? struct a { int x; struct a *b; }

2 4152

Is the following code legal? typedef struct a { int x; aType *b; }aType

1 3785

Is the following code legal? typedef struct a aType; struct a { int x; aType *b; };

1 4101

Is the following code legal? void main() { typedef struct a aType; aType someVariable; struct a { int x; aType *b; }; }

1 4327

void main() { printf(“sizeof (void *) = %d \n“, sizeof( void *)); printf(“sizeof (int *) = %d \n”, sizeof(int *)); printf(“sizeof (double *) = %d \n”, sizeof(double *)); printf(“sizeof(struct unknown *) = %d \n”, sizeof(struct unknown *)); }

1 7840

char inputString[100] = {0}; To get string input from the keyboard which one of the following is better? 1) gets(inputString) 2) fgets(inputString, sizeof(inputString), fp)

1 4406

Which version do you prefer of the following two, 1) printf(“%s”,str); // or the more curt one 2) printf(str);

1 5016

void main() { int i=10, j=2; int *ip= &i, *jp = &j; int k = *ip/*jp; printf(“%d”,k); }

1 7336


Un-Answered Questions { Programming Code }

Cluster head selection in Wireless Sensor Network using C programming language.

3114


write a function that reverse the elements of an array in place.The function must accept only one pointer value and return void.

3958


plzzzzzzzzz xplain this code import java.awt.*; import java.util.Date; import java.awt.event.*; import java.awt.MenuItem.*; import java.sql.*; import sun.jdbc.odbc.*; import java.io.*; public class NewConnection extends Frame implements ActionListener { Label l1,l2,l3,l4,l5,l6,l7,l8,l9,l10,l11,l12,l13; Button exit,save,bnext,top,prev,botm,ad,edit; TextField txtSvNo,txtConsNo,txtSvDt,txtConsName,txtAddr1,txtPhNo,txtCy lQty,txtCylDep,txtRegDep,txtRegQty,adr2,adr3,tot,stnry,rmrk; Date date=new Date(); String ConsName; String Addr1; public static void main(String sr[]) { new NewConnection().setVisible(true); } public NewConnection() { super("New Connection"); Statement stmt; ResultSet rs; //PreparedStatement pst; Connection con; try { Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver"); con=DriverManager.getConnection("jdbc:odbc:Agency"); if (con!=null); System.out.println ("connected"); stmt =con.createStatement (); } catch(Exception e1) { System.out.println (e1); } setSize(1280,800); setBackground(Color.lightGray); setLayout(null); l1=new Label("SV NO"); l1.setBounds(260,60,90,30); l1.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l1.setAlignment(Label.CENTER); add(l1); l2=new Label("CONSMR NO"); l2.setBounds(30,60,90,30); l2.setFont(new Font("TimesRoman",Font.PLAIN,15)); l2.setAlignment(Label.CENTER); add(l2); l3=new Label("SV DATE"); l3.setBounds(520,60,90,30); l3.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l3.setAlignment(Label.CENTER); add(l3); l4=new Label("NAME"); l4.setBounds(30,150,45,30); l4.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l4.setAlignment(Label.CENTER); add(l4); l5=new Label("ADRS"); l5.setBounds(30,220,45,30); l5.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l5.setAlignment(Label.CENTER); add(l5); l6=new Label("PH NO"); l6.setBounds(500,150,45,30); l6.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l6.setAlignment(Label.CENTER); add(l6); l7=new Label("CYLDR"); l7.setBounds(30,390,55,30); l7.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l7.setAlignment(Label.CENTER); add(l7); l8=new Label("DEPOSIT"); l8.setBounds(320,390,65,30); l8.setFont(new Font("TimesRoman",Font.PLAIN,15)); l8.setAlignment(Label.CENTER); add(l8); l9=new Label("DEPOSIT"); l9.setBounds(320,440,65,30); l9.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l9.setAlignment(Label.CENTER); add(l9); l10=new Label("RGLTR"); l10.setBounds(30,440,55,30); l10.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l10.setAlignment(Label.CENTER); add(l10); l11=new Label("TOTAL"); l11.setBounds(320,480,55,30); l11.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l11.setAlignment(Label.CENTER); add(l11); l12=new Label("Cur.Statn.NO."); l12.setBounds(290,550,85,30); l12.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l12.setAlignment(Label.CENTER); add(l12); l13=new Label("REMARKS"); l13.setBounds (30,630,85,30); l13.setFont(new Font ("TimesRoman",Font.PLAIN,15)); l13.setAlignment (Label.CENTER); add(l13); txtSvNo=new TextField(); txtSvNo.setBounds(375,60,80,30); txtSvNo.setBackground(Color.white); add(txtSvNo); txtConsNo=new TextField(); txtConsNo.setBounds(130,60,80,30); txtConsNo.setBackground(Color.white); add(txtConsNo); txtSvDt=new TextField(); txtSvDt.setBounds(635,60,80,30); txtSvDt.setBackground(Color.white); add(txtSvDt); txtConsName=new TextField(); txtConsName.setBounds(100,150,200,30); txtConsName.setBackground(Color.white); add(txtConsName); txtAddr1=new TextField(); txtAddr1.setBounds(100,220,350,30); txtAddr1.setBackground(Color.white); add(txtAddr1); adr2=new TextField(); adr2.setBounds(100,250,350,30); adr2.setBackground(Color.white); add(adr2); adr3=new TextField(); adr3.setBounds(100,280,350,30); adr3.setBackground(Color.white); add(adr3); txtPhNo=new TextField(); txtPhNo.setBounds(570,150,150,30); txtPhNo.setBackground(Color.white); add(txtPhNo); txtCylQty=new TextField(); txtCylQty.setBounds(100,390,60,30); txtCylQty.setBackground(Color.white); add(txtCylQty); txtCylDep=new TextField(); txtCylDep.setBounds(410,390,60,30); txtCylDep.setBackground(Color.white); add(txtCylDep); txtRegDep=new TextField(); txtRegDep.setBounds(410,440,60,30); txtRegDep.setBackground(Color.white); add(txtRegDep); txtRegQty=new TextField(); txtRegQty.setBounds(100,440,60,30); txtRegQty.setBackground(Color.white); add(txtRegQty); tot=new TextField(); tot.setBounds(410,490,60,30); tot.setBackground(Color.white); add(tot); stnry=new TextField(); stnry.setBounds(410,550,60,30); stnry.setBackground(Color.white); add(stnry); rmrk=new TextField(); rmrk.setBounds(140,630,600,30); rmrk.setBackground(Color.white); add(rmrk); exit=new Button("EXIT"); exit.setBackground(Color.orange); exit.setBounds(760,700,40,40); exit.addActionListener(this); add(exit); save=new Button("SAVE"); save.setBackground(Color.orange); save.setBounds(715,700,40,40); save.addActionListener(this); add(save); bnext=new Button("NEXT"); bnext.setBackground(Color.orange); bnext.setBounds(90,700,40,40); bnext.addActionListener(this); add(bnext); top=new Button("TOP"); top.setBackground(Color.orange); top.setBounds(0,700,40,40); top.addActionListener(this); add(top); prev=new Button("PREV"); prev.setBackground(Color.orange); prev.setBounds(45,700,40,40); prev.addActionListener(this); add(prev); botm=new Button("BOTM"); botm.setBackground (Color.orange); botm.setBounds (135,700,40,40); botm.addActionListener (this); add(botm); ad=new Button("ADD"); ad.setBackground (Color.orange); ad.setBounds (300,700,40,40); ad.addActionListener (this); add(ad); edit=new Button("EDIT"); edit.setBackground (Color.orange); edit.setBounds (345,700,40,40); edit.addActionListener (this); add(edit); } public void actionPerformed(ActionEvent e) { if(e.getSource()==exit) { this.dispose(); System.exit(0); } if(e.getSource()==save) { try { Connection con=DriverManager.getConnection("jdbc:odbc:Agency"); PreparedStatement pst=con.prepareStatement("INSERT INTO NewCon values (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"); pst.setInt (1,Integer.parseInt(txtConsNo.getText())); pst.setInt (2,Integer.parseInt(txtSvNo.getText())); pst.setString (3,txtSvDt.getText()); pst.setString (4,txtConsName.getText()); pst.setInt(5,Integer.parseInt (txtPhNo.getText())); pst.setString(6,txtAddr1.getText()); pst.setString(7,adr2.getText()); pst.setString(8,adr3.getText()); pst.setInt(9,Integer.parseInt (txtCylQty.getText())); pst.setInt(10,Integer.parseInt (txtCylDep.getText())); pst.setInt(11,Integer.parseInt (txtRegQty.getText())); pst.setInt(12,Integer.parseInt (txtRegDep.getText())); pst.setInt(13,Integer.parseInt (tot.getText())); pst.setInt(14,Integer.parseInt (stnry.getText())); pst.setString(15,rmrk.getText()); pst.executeUpdate (); con.close(); } catch(Exception e2) {System.out.println(e2);} } if(e.getSource()==ad) { int newcono=60000,newsvno=10000; System.out.println("entered if body"); try { System.out.println("entered the try:"); Connection con1=DriverManager.getConnection("jdbc:odbc:Agency"); Statement stmt1=con1.createStatement(); ResultSet rs1=stmt1.executeQuery("SELECT Cons_No,Sv_No FROM NewCon "); while(rs1.next()) { //System.out.println(rs1.getInt("Cons_No")); txtConsNo.setText(""+rs1.getInt(1)); txtSvNo.setText(""+rs1.getInt(2)); //newcono=rs1.getInt("Cons_No"); } //rs1.last(); newcono=Integer.parseInt(txtConsNo.getText ()); newsvno=Integer.parseInt(txtSvNo.getText ()); //newcono=rs1.getInt("Cons_No"); System.out.println(newcono); newcono=newcono+1; newsvno=newsvno+1; txtConsNo.setText (""+newcono); txtSvNo.setText(""+newsvno); txtSvDt.setText(""+ date); txtConsName.setText(""); txtAddr1.setText(""); txtPhNo.setText(""); txtCylQty.setText(""); txtCylDep.setText(""); txtRegDep.setText(""); txtRegQty.setText(""); adr2.setText(""); adr3.setText(""); tot.setText(""); stnry.setText(""); rmrk.setText(""); con1.close(); } catch(Exception e4){System.out.println (e4);} } if(e.getSource()==bnext) { try{ Connection con2=DriverManager.getConnection ("jdbc:odbc:Agency"); Statement stmt2=con2.createStatement (); ResultSet rs2=stmt2.executeQuery("SELECT * FROM NewCon "); rs2.next(); { txtConsNo.setText(rs2.getInt(1)+""); txtSvNo.setText (rs2.getInt(2)+""); txtSvDt.setText (rs2.getString(3)+""); txtConsName.setText (rs2.getString(4)+""); txtPhNo.setText (rs2.getInt(5)+""); txtAddr1.setText(rs2.getString(6)+""); adr2.setText (rs2.getString("Address2")+""); adr3.setText (rs2.getString("Address3")+""); txtCylQty.setText (rs2.getInt(9)+""); txtCylDep.setText (rs2.getInt(10)+""); txtRegDep.setText (rs2.getInt(11)+""); txtRegQty.setText (rs2.getInt(12)+""); tot.setText(rs2.getInt (13)+""); stnry.setText(rs2.getInt(14) +""); rmrk.setText(rs2.getString (15)+""); } } catch(Exception e5){} } } }

1684


Coding for .NET Delegates?

2102


What is the functionality of FindWindow?

562






In java, why do we set thread priority, when we know that there is no guarantee by which a thread should be execute?

2071


write a program to calculate the amount of investment after a period n years if the principal investors was p and interest is calculated using compound interest,formular=a=p(1+r)^n

2368


What is the functionality of SetForegroundWindow?

568


How can you print an address of a variable?

512


I need your help, i need a Turbo C code for this problem.. hope u'll help me guys.? Your program will have a 3x3 array. The user will input the sum of each row and each column. Then the user will input 3 values and store them anywhere, or any location or index, temporarily in the array. Your program will supply the remaining six (6) values and determine the exact location of each value in the array. Example: Input: Sum of row 1: 6 Sum of row 2: 15 Sum of row 3: 24 Sum of column 1: 12 Sum of column 2: 15 Sum of column 3: 18 Value 1: 3 Value 2: 5 Value 3: 6 Output: Sum of Row 1 2 3 6 4 5 6 15 7 8 9 24 Sum of Column 12 15 18 Note: Your program will not necessary sort the walues in the array Thanks..

2811


Code for Searching for Multiple Matches with the MatchCollection Class?

2981


How do you verify if the two sentences/phrases input is an anagram using predefined functions in string.h and by using arrays?

2029


write a program that reverses the input number of n.Formulate an equation to come up with the answer.

7040


plzzzzzzzzz xplain this code import java.awt.*; import java.awt.event.*; //import java.awt.MenuItem.*; public class MenuForm extends Frame implements ActionListener { MenuBar mb=new MenuBar(); Menu m1=new Menu("Master"); Menu m2 =new Menu("Transactions"); Menu m3=new Menu("Queries"); Menu m4=new Menu("Reports"); Menu m5=new Menu("Daily/Weekly"); Menu m6=new Menu("Housekeeping"); Menu m7=new Menu("About"); Menu m8=new Menu("Utilities/Tools"); Menu m9=new Menu("exit"); MenuItem m11=new MenuItem("consumer master"); MenuItem m12=new MenuItem(""); MenuItem m13=new MenuItem(""); MenuItem m21=new MenuItem("New Connection"); MenuItem m22=new MenuItem("Refill Booking"); MenuItem m23=new MenuItem("Shop Delivery"); MenuItem m51=new MenuItem("Mrk Dlry"); MenuItem m91=new MenuItem("Quit"); /*MenuItem m131=new MenuItem(" "); MenuItem m132=new MenuItem(" "); MenuItem m134=new MenuItem(" ");*/ Font f=new Font("TimesRoman",Font.BOLD,16); Frame f1; public static void main(String args[]) { new MenuForm().setVisible(true); } public MenuForm() { super("Gas Agency Main Menu"); setSize(1280,800); setBackground(Color.lightGray); setLayout(null); setMenuBar(mb); /*m1.setFont(new Font("TimesRoman", Font.BOLD,16)); m2.setFont(new Font("TimesRoman", Font.BOLD,16)); m3.setFont(new Font("TimesRoman", Font.BOLD,16));*/ mb.add(m1); mb.add(m2); mb.add(m3); mb.add(m4); mb.add(m5); mb.add(m6); mb.add(m7); mb.add(m8); mb.add(m9); m1.add(m11); m1.add(m12); m1.add(m13); m2.add(m21); m2.add(m22); m2.add(m23); m5.add(m51); m9.add(m91); //m3.add(m31); /*m13.setEnabled(false); m13.add(m131); m13.add(m132); m13.add(m133); m13.add(m134); m13.add(m135);*/ setVisible(true); /*m11.addActionListener(this); m12.addActionListener(this); m13.addActionListener(this); m2.addActionListener(this); m3.addActionListener(this);*/ m21.addActionListener(this); m22.addActionListener(this); m23.addActionListener(this); /*m31.addActionListener(this); m131.addActionListener(this); m132.addActionListener(this); m133.addActionListener(this); m134.addActionListener(this); m135.addActionListener(this);*/ m51.addActionListener(this); m91.addActionListener(this); } public void actionPerformed(ActionEvent e) { /*if(e.getSource()==m11) { } if(e.getSource()==m12) { } if( (e.getSource()==m131) || (e.getSource() ==m132) || (e.getSource()==m133) || (e.getSource()==m134) || (e.getSource()==m135) ) { }*/ if(e.getSource()==m21) { NewConnection nc=new NewConnection (); nc.setVisible(true); this.dispose(); } if(e.getSource()==m22) { RefillBooking rb=new RefillBooking (); rb.setVisible(true); this.dispose(); } if(e.getSource()==m23) { ShopDelivery sd=new ShopDelivery(); sd.setVisible(true); this.dispose(); } if(e.getSource()==m51) { MarkDelivery mrk=new MarkDelivery(); mrk.setVisible (true); this.dispose(); } if(e.getSource()==m91) { this.dispose(); System.exit(0); } } }

1671


Write code to make an object work like a 2-d array?

482