[C++]6 function2
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This document summarizes a presentation on functions, including recursion, call by value, and call by reference. It provides examples of code to swap values using call by value versus call by reference. It also discusses memory addresses and the differences between call by value and call by reference. Finally, it provides practice problems and assignments, including writing recursive functions for factorial and calculating D-Days.
[C++]6 function2
- 1. Function2Presented by Junyoung Jung Club MARO Dept. of Electronic and Radio Engineering Kyung Hee Univ. ch6.
- 2. Content 1. Recursion Function 2. Call by Value 3. Call by Reference 4. Practice 5. Assignments 0. Last class Review
- 3. Content 3 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference
- 4. Content 4 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference # 재귀함수 함수가 자기 자신을 호출하는 것을 재귀 함수라 한다. 반복문으로 충분히 나타낼 수 있지만, 재귀함수를 사용하는 것은 직관적으로 알기 쉬워서이다!!
- 5. Content 5 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference # 재귀함수 저번주 과제 재귀써서 푼 칭구들 있던데, 재귀를 안 쓴 사람 & 과제를 안 한사람은 지금 한번 해보기!!!
- 6. Content 6 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference # Call by Value (값에 의한 호출) … void func1(int a, int b) { int temp = a; a = b; b= temp; return ; } int main() { int num1 = 10; int num2 = 20; cout << “befor : ” << num1 << “, ” << num2 << endl; func1(num1, num2); cout << “after: ” << num1 << “, ” << num2 << endl; return 0; }
- 7. Content 7 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference … void func2(int *a, int *b) { int temp = *a; *a = *b; *b= temp; return ; } int main() { int num1 = 10; int num2 = 20; cout << “befor : ” << num1 << “, ” << num2 << endl; func2(&num1, &num2); cout << “after: ” << num1 << “, ” << num2 << endl; return 0; } # Call by Reference (참조에 의한 호출)
- 8. Content 8 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference func1 vs func2 차이점을 알겠나?
- 9. Content 9 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference 무엇을 참조(?)????? Ch02에서 배운 컴퓨터 구조 를 생각해보자!!!
- 10. Content 10 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference CPU Memory I/O I/O . . . 0 4 8 100 104 108 Processing
- 11. Content 11 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference * & : 메모리 주소를 가리킨다 : 메모리 주소를 받는다 # 이것만은 꼭 이해 !!!
- 12. Content 12 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference … void func1(int *a, int *b) { } int main() { … func1(&num1, &num2); return 0; } . . . num1 num2 func2( *a , *b ) 100번지 101번지 # 이것만은 꼭 이해 !!!
- 13. Content 13 0. Last classReview 4. Practice 5. Assignments 1. RecursiveFunction 2. Call by Value 3. Call by Reference 위에 예제 코드 보지 말고 직접 코딩해보기 func1: call by value 이용 swap func2: call by reference 이용 swap # Practice
- 14. Content 14 0. Last classReview 2. Call by Value 3. Call by Reference 4. Practice 5. Assignments 1. RecursiveFunction Assignment ) 재귀를 써서 Factorial 함수 만들기
- 15. Content 15 0. Last classReview 2. Call by Value 3. Call by Reference 4. Practice 5. Assignments 1. RecursiveFunction Assignment 뽀너스) D-Day 계산하는 함수 만들기!!!!!!!!!!!! (참고로 내가 1학년때 이거하느라 개고생) (시간 남는 사람만 해봐 ㅋㅋㅋㅋㅋㅋ)
- 16. Thank you