제1 장. 소프트웨어개발과정 - dblab.duksung.ac.kr

1 < C >1 1 . 1. (life cycle) 2. ? < C >2 (a system based on software) (sequence of instruction) (the process of designing, writing, testing, debugging, and maintaining the source code of computer programs) (a collection of computer programs and related data)* : System: a set of interacting or interdependent components forming an integrated whole( : computer system? ..< C >3( ) n .. , 1. 2. 3..1. ( ) n ? -> ( )Whatis the problem?Howto solve the < C > ( ) n.)

2 ( )2) .3) .4) .5) . ( )6) , . 1) ( ) . ( ) / < C >5( )1. / 2. 3. : . C .( !!)#include < >int main(){int big, x;big =0; while(!feof(stdin)) // stdin , Ctrl-Z {scanf("%d n", if(x>big) big=x;}printf("the big is : %d n ", big);} < C >6( ) - 4. : ..5. : ( ) . , , .6.

3 < C >7( ) 1. ( ).. ?-> .2. ? ?-> 3. ? ?-> 4. ? ?-> , . < C > (Software Life Cycle, )(1) (Requirements Analysis)(2) (Design)(3) (Programming)(4) (Testing)(5) (Use)(6) (Maintenance)< C >9( )(1) (Requirements Analysis)- , ( , , ) .. (2) / (Software/System Design).

4 , . (3) (Programming, Coding)- . (4) (Software Testing)- .(5) (Use)- .(6) (Maintenance)- 1. (bug) , 2. , 3. (upgrade) . (System Development Life Cycle)< C >10(1) (Requirements Analysis) - (2) (Design)- (3) (Coding)- - - - - ( )- (4) (Test)- - (5) (Use)(6) (Maintenance).

5 Q/A ? - - - - - - < C >11< C >122. + . (3) .. = + C, Java . , , . ( )+ ?< C > ( ) ? ? ? ?1. ( ), ( ) 2. ( ) , , 3. ( ) < C > ( ) 1 .. 1 1.

6 1 1 ..( 1) 1 . 300 8,000 .. - - < C >15 2 14 1 . 14 ..( 2) 14 .. 300 1,000 1,000 .. - - < C >16 3 14 1 . 14 ..( 3) 14 .. 10.

7 1 . - - < C >17( ) . ( ) ( 3 ). 1 . 1 ( ) .. ( , (search) (insert) . , .. < C > 1) 2) 3) < C >19 ( : ) .. < C >20 1.. 1. ( )2. ( , )3. ( )4. ( , )5. < C >21 2.

8 1. 2. ( 2 ) 3. (Traversal)4. ( , ) < C >22 3. 1. 2. 3. (Traversal) , 4. ( , ) < C >233. - (sorting) .. , , , , .106857 567810 < C >24- (searching) .. : : 567810 8 Q/A ( ) ?.

9 < C >25