Homework assignments
HW06
- Reading:
- Agustín Cernuda del Río, How Not to Go About a Programming Assignment
- Reading:
- CS50 programming style guide
- Video:
- N. Hardison, CS50, Libraries
- Video:
- N. Hardison, CS50, GDB
- Video:
- N. Hardison, CS50, Binary
- Problems:
-
HW6, [ 61K ], last updated October 18, 2016
Code for Problem 4 HW6, [ 352 ], last updated October 16, 2016
HW05
- Video:
- R. Bowden, CS50, Pointers
- Video:
- R. Bowden, CS50, Structs
- Video:
- J. Jozwiak, CS50, Typecasting
- Video:
- N. Hardison, CS50, ASCII
- Problems:
-
HW5, [ 73K ], last updated September 29, 2016
HW04
- Video:
- J. Jozwiak, CS50, Precedence
- Video:
- R. Bowden, CS50, Compilers
- Video:
- D. Dicuircio, CS50, Scope
- Video:
- J. McCormick, CS50, Local and global variables
- Problems:
-
HW4, [ 58K ], last updated September 22, 2016
HW03
- Video:
- T. MacWilliam, CS50, Loops
- Video:
- R. Bowden, CS50, Arrays
- Video:
- J. Jozwiak, CS50, Typecasting
- Video:
- N. Hardison, CS50, Functions
- Problems:
-
HW3, [ 64K ], last updated September 27, 2016
HW02
- Reading:
- Virtualization
- Video:
-
J. Leek, Command line interface
Local copy of the video and the lecture notes posted online on September 01, 2014; on-campus access only - Video:
-
T. MacWilliam, CS50, C programming: Code Style
- Video:
-
V. Shekhawat, CS50, Boolean Values
- Video:
-
V. Shekhawat, CS50, Variables
- Problems:
-
HW02, [ 58K ], last updated September 07, 2016
- Programming:
-
The following fully functional 'chromosome-shaped' program is one of the winners of 2014 International Obfuscated C Code Contest . What does it do?
#include <stdio.h> #define TA q=/*XYXY*/ #define/*X YXY*/CG r= void p(int n,int c){; for(;n--;) putchar(c) #define Y( z)d;d=c++\ %2<1?x=x*4 +z,c%8>5?\ x=x?p(1,x), 0:x:0:0;d= #define/*X YX*/C Y(1) #define/*X YX*/G Y(2) ;}int(*f)( void),d,c, #define/*X YX*/A Y(0) #define/*XY*/AT int\ m(void/**/){d= #define/*XYX*/T Y(3) #define GC d; return\ 0;}int(*f) (void )=m; x,q,r; int main(){if( f)f();else {for(puts( "#include" "\40\"pro\ g.c\"\n\n \101T"+0); d=!d?x=(x= getchar()) <0?0:x,8*8 :d,TA++c%8 ,TA(1+7*q- q*q)/3,r=c *15-c*c-36 ,p(r<0?!q+ 4:r/6+!q+4 ,32),q||x; c%=16)q?p( 1,"ACGT"[x /d&3]),p(q ,126),p(1, "TGCA"[x/d &3]),d/=4, p(001,10): puts(c%8?\ "CG":"TA") ;puts("GC" );}return 0;}/**/ Hints
- Copy and save the code of the program to a file, say prog.c
- Compile the code as usual:
clang -Wall prog.c -o prog
- Run the program as following:
echo 12345 | ./prog
HW01
- Reading:
-
Mike Vanier, Scalable computer programming languages
Based on the information from the article, what language would you you choose for the first programming course?
- Data analysis:
-
Popularity of computer programming languages
Look for the Long term trends graph and Very long term history table
- Data analysis:
-
XYZ dominates supercomputers as never before
For the latest data visit TOP500 and chose Operating System Family as a category for the search
- Problems:
-
HW01, [ 56K ], last updated August 29, 2016
- Software:
-
Download and install: VirtualBox
Download and import: physics 2200 virtual appliance, ca 4GB, last updated Sep 1, 2016.
MD5 Checksum: 58BFDDE92789CD324DBD980816A9ABD0 SHA-1 Checksum: AD5CF6E7A5DC241B74490277D12F84F2FE21776A SHA-256 Checksum: 5E130F959479A9E9EF857BDD21342AA3B039568C9D9706C48089540D019BAF47 SHA-512 Checksum: BA6960EB03162DF4ECE9FDDD3896874D552563EA55AADD31E9A3CAC4CF91EE5F173C597FB14480F7F3C0E6732A234E3229698C8B89D8445291EB53B4EA739B78Or, download and import: physics 2200 virtual appliance 32 bit, ca 4GB, last updated Sep 8, 2016.
MD5 Checksum: C520BC1865AC4B28178CA3AF1E84A61F SHA-1 Checksum: 194ECA390EDEDB6C13A7160317F64F9790FFA7B4 SHA-256 Checksum: 52F9A51F5DC23628D9932D28B646340F36D329ABFA0183F1572CC957DFB67956 SHA-512 Checksum: AFA305BFCBBC0007F00F72991370AA045A7BE90EBC6A38F30A45F48C32E03D628A89D8D6A6FEB69443B2C68299F063AEF521874B1F24502909A1501FBE1EE9E8A checksum is a small-size datum used for the purpose of detecting errors which may have been introduced during a data file transmission or storage.
The actual procedure which yields the checksum, given a data input is called a checksum algorithm. A good checksum algorithm will usually output a significantly different value, even for small changes made to the input.
Checksum tools are installed on Mac and Linux by default. A Windows version of a checksum program is available at https://raylin.wordpress.com/downloads/md5-sha-1-checksum-utility/
