Computer and program Design

For the sake of test i write some guideline here for people who read my blog.. so here goes. I'll be basically writing about the programming part and some guidelines. and some notes too.

format string:

1. %.5f presicion 5 decimal place
2. %9.5f field width 9 character
3. %e show in exponent form
   

logical operation :

1. NOT !
2. AND &&
3. OR ||

some notes about equality and assignment operator:
== means comparing between the 2 value
= means assigning some value to the variable

Chapter 4
Terms

1. Classical waterfall model-----RDCTDM--requirement, design, code, testing, documentation,maintainance
2. Algorithm
   
3. Pseudocode
4. Flowchart
5. Control structure in C

• Sequence structure
  
• Selection structure
  
• Repetition structure

Selection structure

1. If.. else

• if(condition)statement true; else{ statement false}
• using ternery operator||(condition? statement true:statement false)
  

2.Switch

• switch(control expression){

case a: if the case is char need((((' '))))))
action; break means come out of loop
break;
.............
...............
.............
default:
action;
break;

}

notes..
getchar()>>>>>>>>> get 1 character from keyboard

Repetition structure

1.While
while(condition) in while there is no ; beside condition
{ body}
2. do..while
do{
statement;}
while(condition);
3. for
for(initialization; loop continuation test; counter)
{
use comma for many initialization
} initialize then test do the statement only the increase counter and check again

Function
usefull library function

1. stdlib.h
2. math.h
3. ctype.h
4. string.h

Function definition
return_data_type function function_name(parameter list)
{ **** can only return 1 item
declaration
statement
}

Function prototype
return-data-type function name(parameter-list);

• required only when function definition comes after use in program
• no need variable name

Function call
same as function prototype but supply with real parameter

2 way to call function

1. call by reference
2. call by value