1. Introduction to C Programming
06/04/2019
Introduction to C Programming
Dr. Nouf Aljaffan
Nouf Aljaffan (C) 2018

2. Objectives Write simple C programs.
Use simple input and output statements.
Use the fundamental data types.
Learn computer memory concepts.
Use arithmetic operators.
Learn the precedence of arithmetic operators.
Write simple decision making statements.
Begin focusing on secure C programming practices
Nouf Aljaffan (C) 2018

3. Structure of a .c file Add Comments Insert pre-processor definitions
06/04/2019
Structure of a .c file
Add Comments
Line comment: // my comment
multi-line comments : /* my comments */
Insert pre-processor definitions
#include < [file name & extension] >
Add function prototypes and variable declarations
Define main function
int main( void ) { [function body] }
Define other functions
Nouf Aljaffan (C) 2018
Nouf Aljaffan (C) 2018

4. Structure of a .c file An Output Statement
06/04/2019
Structure of a .c file
An Output Statement
printf( “this will be displayed on screen” );
The backslash (\) as used
here is called an escape character.
Nouf Aljaffan (C) 2018
Nouf Aljaffan (C) 2018

5. Multiple printfs
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6. Avoid Single-Argument printf
With newline
Without newline
Nouf Aljaffan (C) 2018

7. Adding Two Integers Add Comments Insert pre-processor definitions
06/04/2019
Adding Two Integers
Add Comments
Insert pre-processor definitions
Define main function
Declare variables
[DataType] [VariableName];
Variable names are case sensitive
User scanf to read variables by a user at the keyboard
scanf(“format control string,”, &variableName)
computes the sum of two values
Nouf Aljaffan (C) 2018
Nouf Aljaffan (C) 2018

8. Input / Output More format specifiers
printf (); //used to print to console(screen)
example: printf(“%c”, ’a’);
scanf (); //used to take an input from console(user).
example: scanf(“%d”, &a);
%c     The character format specifier.
%d     The integer format specifier.
%i     The integer format specifier (same as %d).
%f     The floating-point format specifier.
%o     The unsigned octal format specifier.
%s     The string format specifier.
%u     The unsigned integer format specifier.
%x     The unsigned hexadecimal format specifier.
%%     Outputs a percent sign.
C Course, Programming club, Fall 2008

9. Arithmetic in C
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10. Rules of Operator Precedence
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11. Decision Making: Equality and Relational Operators
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12. 06/04/2019
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Nouf Aljaffan (C) 2018

13. 06/04/2019
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Nouf Aljaffan (C) 2018

14. 06/04/2019
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Nouf Aljaffan (C) 2018

15. Nouf Aljaffan (C) 2018

16. are reserved words of the language
Nouf Aljaffan (C) 2018

17. Conclusion Program structure printf & scanf Arithmatics
Equality and rational operators
Keywords
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18. Any Question!
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19. Exercises
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20. Exercise 1
Identify and correct the errors in each of the following statements:
printf( "The value is %d\n", &number );
scanf( "%d%d", &number1, number2 );
if ( c < 7 );{
printf( "C is less than 7\n" ); }
if ( c => 7 ) {
printf( "C is greater than or equal to 7\n" );
Nouf Aljaffan (C) 2018

21. Exercise 2 Convert the algorithm to C source code
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22. Exercise 3 Convert the algorithm to C source code
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23. References C how to program, 8\e, by P. and H. Deitels , Chapter 2
Nouf Aljaffan (C) 2018