Downloaded 18 times
Uploaded byPaul Solt
Functions in Objective-C and C Programming
The document outlines key programming concepts such as functions, stack frames, recursion, and global variables, primarily using examples related to calculating areas and countdown timers. It illustrates function definitions, parameter passing, and the execution of recursion through a countdown process. Additionally, there is a brief mention of managing global variables in programming.
More Related Content
Similar to Functions in Objective-C and C Programming
Functions in Objective-C and C Programming
- 1. Paul Solt iPhoneDev.tv Functions Instruction manualsfor computers
- 2.
- 3.
- 4. Paul Solt iPhoneDev.tv Desk 1. Buildsmall drawer 2. Build large drawer 3. Build desk frame 4. Insert small drawer 5. Insert large drawer
- 5. Paul Solt iPhoneDev.tv Area =A x B Area A B
- 6. Paul Solt iPhoneDev.tv int area(intsideA, int sideB)
- 7. Paul Solt iPhoneDev.tv int area(intsideA, int sideB) return type
- 8. Paul Solt iPhoneDev.tv int area(intsideA, int sideB) name return type
- 9. Paul Solt iPhoneDev.tv int area(intsideA, int sideB) name parameter return type parameter
- 10. Paul Solt iPhoneDev.tv int area(intsideA, int sideB)
- 11. Paul Solt iPhoneDev.tv int area(intsideA, int sideB) { int result = sideA * sideB; return result; }
- 12. Paul Solt iPhoneDev.tv int total= area(4, 2);
- 13. Paul Solt iPhoneDev.tv int total= area(4, 2); arguments
- 14. Paul Solt iPhoneDev.tv int total= area(4, 2); 8 arguments
- 15. Paul Solt iPhoneDev.tv int total= area(4, 2);
- 16.
- 17.
- 18. Paul Solt iPhoneDev.tv Stack Frame â˘âSandboxâ â˘LocalVariables main() total= area(4,2); area(4,2) sideA = 4 sideB = 2 result = 8
- 19.
- 20.
- 21.
- 22.
- 23. Paul Solt iPhoneDev.tv Recursion Space Shuttle:CountdownTimer 1. Display number 2. Subtract one 3. Repeat steps 1 and 2 (until 0) STS-110, NASA
- 24.
- 25. Paul Solt iPhoneDev.tv Recursion void countDown(intnumber) { if(number == 0) { printf("Take off!n"); } else { printf("T-minus %d secondsn", number); int nextNumber = number - 1; countDown(nextNumber); } }
- 26. Paul Solt iPhoneDev.tv Recursion void countDown(intnumber) { if(number == 0) { printf("Take off!n"); } else { printf("T-minus %d secondsn", number); int nextNumber = number - 1; countDown(nextNumber); } }
- 27. Paul Solt iPhoneDev.tv Recursion void countDown(intnumber) { if(number == 0) { printf("Take off!n"); } else { printf("T-minus %d secondsn", number); int nextNumber = number - 1; countDown(nextNumber); } }
- 28.
- 29. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5)
- 30. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4)
- 31. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3)
- 32. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3) countDown(3) nextNumber = 2 countDown(2)
- 33. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3) countDown(3) nextNumber = 2 countDown(2) countDown(2) nextNumber = 1 countDown(1)
- 34. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3) countDown(3) nextNumber = 2 countDown(2) countDown(2) nextNumber = 1 countDown(1) countDown(1) nextNumber = 0 countDown(0)
- 35. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3) countDown(3) nextNumber = 2 countDown(2) countDown(2) nextNumber = 1 countDown(1) countDown(1) nextNumber = 0 countDown(0) countDown(0) take off!
- 36. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3) countDown(3) nextNumber = 2 countDown(2) countDown(2) nextNumber = 1 countDown(1) countDown(1) nextNumber = 0 countDown(0)
- 37. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3) countDown(3) nextNumber = 2 countDown(2) countDown(2) nextNumber = 1 countDown(1)
- 38. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3) countDown(3) nextNumber = 2 countDown(2)
- 39. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4) countDown(4) nextNumber = 3 countDown(3)
- 40. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5) countDown(5) nextNumber = 4 countDown(4)
- 41. Paul Solt iPhoneDev.tv Stack Frame main() startNumber= 5 countDown(5)
- 42.
- 43.
- 44. Paul Solt iPhoneDev.tv GlobalVariables int total= 10 resetTotal() total = 0; updateTotal() total = total + 1;
- 45.
- 46.
- 47.