1 introducing c language
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This document provides an overview of the C programming language course contents which includes data types, operators, control statements, functions, arrays, pointers, input/output and string functions. It also discusses the seven steps of programming, C strengths such as efficiency and portability, weaknesses like not being object-oriented, and provides simple C program examples and explanations.
1 introducing c language
- 2. Course Contents âą Introducing C. âą Data and C. âą Character Strings and formatted input/output. âą Operators, Expressions and Statements. âą C Control Statements: looping. âą C Control Statements: Branching and jumping. âą Character input/output and input validation. âą Functions.
- 3. âą Arrays and Pointers. âą Character Strings and String Functions.
- 6. The seven steps of programming 1 - Define the program objectives. 2 - Design the program. 3 - Write the code. 4 - Compile. 5 - Run the program. 6 - Test and debug the program. 7 - Maintain and modify the program.
- 7. C Strengths âą Efficiency. âą Portable. âą Power & Flexibility. âą Fast. âą Favourable language when interacting with hardware. âą Small and Compact.
- 8. C Weakness âą Not OOP. âą Programming in C needs responsibility.
- 9. How Does a C Program looks like ?! #include <stdio.h> int main(void) { printf("Concrete contains gravel and cement.n"); return 0; }
- 10. Output Concrete contains gravel and cement.
- 11. /* a simple program */ #include <stdio.h> int main(void) { int num; /* define a variable called num */ num = 1; /* assign a value to num */ printf("I am a simple "); /* use the printf() function */ printf("computer.n"); printf("My favorite number is %d because it is first.n",num); return 0; }
- 12. Output I am a simple computer. My favorite number is 1 because it is first.
- 13. Explanation âą #include /* Preprocessor instructions. */ âą int main(void) /* main is the first function to be called always. */ âą Statements. /* functions are made up of statements.*/ âą Function: a(), b(), c() /* usually we write another functions within a program. */ // I am a comment. /* I am the twin brother of comment. */
- 14. // fathm_ft.c -- converts 2 fathoms to feet #include <stdio.h> int main(void) { int feet, fathoms; fathoms = 2; feet = 6 * fathoms; printf("There are %d feet in %d fathoms!n", feet, fathoms); printf("Yes, I said %d feet!n", 6 * fathoms); return 0; }
- 15. Output There are 12 feet in 2 fathoms! Yes, I said 12 feet!
- 16. ISO/ANSI C Keywords auto enum restrict unsigned break extern return void Case float short volatile char for signed while const goto sizeof _Bool continue if static _Complex default inline struct _Imaginary
- 17. do int switch double long typedef else register union