1. Introductory Lecture Programming Club

2. Agenda Programming in Linux for newbies Transition from Turbo to GNU C/C++ Face to face with the ONLINE JUDGE Contest for y6 Junta Weekend Programming Contest

3. Linux for newbies Basic Linux Commands ls, cp, mkdir, chmod, man, rm, less, mv. Text editors Kate, kwrite, emacs, vi. Compile GNU C : gcc GNU C++: g++ Java : javac Execute GNU C/C++:./a.out Java : java

4. Transition from Turbo to GNU C/C++ Use #include instead of #include Include the line using namespace std; before the main function. Do not include conio.h. Do not use any external library int size is 32 bit.

5. Example Problem You are given a very long number of about 1000 digits. You have to successively keep on summing the digits till you reach a single digit. For example – Input: 9946879 Output: 7 How? 9+9+4+6+8+7+9=52; 5+2=7

6. Face to face with Online Judge How to submit ? Understanding judge response Success. Solution Accepted. Compile Error. Wrong Answer. Execution Error: It can be further divided into following categories: Invalid Memory Reference: Null pointer exception? Are you consuming too much memory. Process tried to write a file. Process killed by signal 9 => Time Limit Exceeded. Unknown Error:

7. Contest for Y6 Junta Contest exclusively for Y6 Contest Problems Pascal triangle Longest palindrome in a given string One number in an array of n no.s is missing, nos are not in order, find the missing number Given a number get a new number by adding the digits of the number……keep doing this until the number reduces to a single digit. Print the digit you get Submit solutions/algorithms at

8. WPC Register at students.iitk.ac.in/programmingclub/wpc.htm atleast one hour before the contest begins Date:20 th Aug 2006 Time :8:30 pm to 11:30 pm Submission page : students.iitk.ac.in/programmingclub/wpc.htm All are invited

9. Prizes WPC First prize: 300/- Second Prize: 200/- Third prize: 100/- Chocolates for first 10 correct entries for each question. Y6 contest First correct entry for each problem : Rs 200