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## PowerPoint Slideshow about ' C Programming' - fiona

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printf

- intprintf ( const char * format, ... );
- printf ("Characters: %c \n", \'a\');
- printf ("Decimals: %d %f\n", 1977, 3.14);

Printf - float

- %f – floating point. Displays upto 6 decimal places.
- %0.2f- displays 2 decimal places
- %5.1f- displays 4 digits including one after decimal point. If less digits are there then it gives spaces instead
- %05.1f- displays 4 digits including one after decimal point. If less digits are there then it gives leading zeros.

Printf – decimal

- %5d- displays a the value. If number of digits is less than 5 then leading spaces are given.
- %-5d- here trailing spaces are given.
- %05d- here instead of spaces zeros are given.

Scanf

- Reads data from standard input and stores them according to the parameter format into the locations pointed by the additional arguments.
- Eg: -inti;

scanf ("%d",&i);

Coding standards

- Variable
- Each variable must strictly be named in a meaningful way
- only one declaration of one variable in one line
- Eg: -inttotal_marks;

inttotalmarks;

- File Name
- Filenames should be all lowercase and can include underscores (_) or dashes
- Eg:- helloworld.c or hello_world.c

Coding standards

- Comments
- Meaningful comments and should be proper sentences
- No spelling mistakes in comments
- Indenting
- Two spaces should be used.
- Line length
- Max 80 characters per line

Question 1

- Swap two variables using a temporary variable.
- Input
- Enter integer value 1- 10
- Enter integer value 2- 20
- Output
- Value 1= 10
- Value 2= 20
- After Swapping
- Value 1= 20
- Value 2= 10

Question 2

- Compute volume of a cylinder
- Input
- Enter the radius of cylinder (float)
- Enter height of cylinder in float
- Output
- Volume of the cylinder(round off to 2 decimal places) =

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