StandardsandStylesCProgramming

Variables
Use meaningful identifier names conveying
their uses and contents
Never use abbreviations, if required:1. Remove all vowels, unless they start or end
a word
2. Represent double consonant by a single

Avoid single character identifiers except for
loop counters

Functions
Use comments to describe its purpose and
parameters
Describe inputs and outputs
Always mark start and end of a function
Always explicitly use return type

Miscellaneous Styles
 Never crowd the code
 Group all identifiers by type in ascending order
 Identifiers are in lower case ,each new segment starting
with capital
e.g. stdntNm
 Adopt consistent naming conventions as an alternative
e.g. stdntNme
teacherName
 Use brackets for neater , easy to understand
 If you've got a lot of if / else statements try to put the one
most likely to be met first

Use of Naming Conventions
Use the naming conventions and different
styles consistently
E.g. FooDoo a class
fooDoo a function
foo_doo a variable
 Easier to spot simple mistakes
 Easy to remember capitalized names

Indentation
 Align all the components of the program
 Start a new compound statement just below
the end of defining keyword or differentiate
by three spaces from other statements
 Provide space between operator and operands
 Provide space at start and end of every
expression
 Align all assignment statements

Indentation : Advantages
Enhances the readability
Easy to debug complex programs
Provides vital information regarding the flow
of program control

Starter for Projects
Represent logic on paper reducing logical
errors in due course of development
Match the outside world ideas to logical
design
Sequence into logical snippets
Always keep an updated backup
Make libraries of frequently used codes
Initialize variables with default values

Use multiple files
Break program into functional groups ,each
in it's own file
Develop each part ,test and debug it
independently
Feasible to work with a smaller chunk of
code
Easier to reuse components from your old
code

Tips(contd.)
 You can use sscanf to convert a string to an
integer:
int main()
{
char *str="12";
int i;
sscanf(str, "%d", &i);
printf("%dn", i);
return 0;
}

Tips(contd.)
 To swap two nos
void swap(int &a, int &b)
{
a ^= b;
b ^= a;
a ^= b;
}

Tips(contd.)
 To find whether number is even/odd
int main()
{
char *res[2] = { "Even", "Odd" };
int no;
scanf( "%d", &no );
printf( res[no%2] );
return 0;
}

Tips(contd.)
To find whether number is even/odd
int main()
{
int no;
scanf( "%d", &no );
no&1 ? printf(“Odd"):printf("Even");
}

Ultimate Words
Follow “Look Before you Leap ” as an
initiative
Implement “Divide and Conquer ” while
development and debugging
Try to be nearer to the “Nature ”

Exercise
Write a C/C++ program to maximum
of two numbers
Input : 2 3
Output : 3

Exercise
Write a C/C++ program to rotate a
user specified string for a given
number of times
Input : “Hello” 3
Output : “lloHe”

Exercise
Write a C/C++ program to reverse a
user specified string
Input : “Hello”
Output : “olleH”

1

“I never compete
against the
competition. The
only one I
compete against is
myself ,because
one day, I will

beat the
competition

then what next?”

2

“Keep your
head and
heart in the
right direction
and you will
never worry
about your

feet”

3

“ A Minute’s
success pays the
failure of the
years ”

and the
most important
of

all

4

“In three
words, I can
sum up
everything I’ve
learned about
the short life -

It Goes On”

Books:
1. B.Forozouan
2. C:The Complete
Reference
3. Yeshwant Kanetkar
Series
4.Schaum Series

StandardsandStylesCProgramming

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