๐Ÿ’ป Dev & CSC++ Programming

C++ Programming Ch.6 Exercise 7 Solution

Problem: ๋‹ค์Œ๊ณผ ๊ฐ™์€ static ๋ฉค๋ฒ„๋ฅผ ๊ฐ€์ง„ Random ํด๋ž˜์Šค๋ฅผ ์™„์„ฑํ•˜๋ผ(Open Challenge ํžŒํŠธ ์ฐธ๊ณ ). ๊ทธ๋ฆฌ๊ณ  Random ํด๋ž˜์Šค๋ฅผ ์ด์šฉํ•˜์—ฌ ๋‹ค์Œ๊ณผ ๊ฐ™์ด ๋žœ๋คํ•œ ๊ฐ’์„ ์ถœ๋ ฅํ•˜๋Š” main() ํ•จ์ˆ˜๋„ ์ž‘์„ฑํ•˜๋ผ. main()์—์„œ Random ํด๋ž˜์Šค์˜ seed() ํ•จ์ˆ˜๋ฅผ ํ™œ์šฉํ•˜๋ผ. Execution Result: Objective & Hints: static ๋ฉค๋ฒ„๋ฅผ ๊ฐ€์ง„ ํด๋ž˜์Šค ๋งŒ๋“ค๊ธฐ ๋ฐ ์‚ฌ์šฉ ์—ฐ์Šต ์ •์ˆ˜๋ฅผ ๋žœ๋คํ•˜๊ฒŒ ์ƒ์„ฑํ•˜๋Š” ์ฝ”๋“œ๋Š” ๋‹ค์Œ์„ ์ด์šฉํ•˜๋ฉด ๋ฉ๋‹ˆ๋‹ค. 1 2 3 srand((unsigned)time(0)); // ํ•ญ์ƒ ๋‹ค๋ฅธ ๋žœ๋ค์ˆ˜๋ฅผ ๋ฐฉ์ƒ์‹œํ‚ค๊ธฐ ์œ„ํ•œ seed ์„ค์ • int n = rand(); // 0์—์„œ RAND_MAX(32767) ์‚ฌ์ด์˜ ๋žœ๋คํ•œ ์ •์ˆ˜๊ฐ€ n์— ๋ฐœ์ƒ n = n % 100; // n์€ 0์—์„œ 99 ์‚ฌ์ด์˜ ์ •์ˆ˜ Code: ...

March 6, 2020 ยท 2 min ยท Sobamemil
๐Ÿ’ป Dev & CSC++ Programming

C++ Programming Ch.4 Exercise 14 Solution

Problem: ๊ฒœ๋ธ”๋ง ๊ฒŒ์ž„์„ ๋งŒ๋“ค์–ด๋ณด์ž. ๋‘ ์‚ฌ๋žŒ์ด ๊ฒŒ์ž„์„ ์ง„ํ–‰ํ•˜๋ฉฐ, ์„ ์ˆ˜์˜ ์ด๋ฆ„์„ ์ดˆ๊ธฐ์— ์ž…๋ ฅ ๋ฐ›๋Š”๋‹ค. ์„ ์ˆ˜๊ฐ€ ๋ฒˆ๊ฐˆ์•„ ์ž์‹ ์˜ ์ฐจ๋ก€์—์„œ ํ‚ค๋ฅผ ์น˜๋ฉด ๋žœ๋คํ•œ 3๊ฐœ์˜ ์ˆ˜๊ฐ€ ์ƒ์„ฑ๋˜๊ณ  ๋ชจ๋‘ ๋™์ผํ•œ ์ˆ˜๊ฐ€ ๋‚˜์˜ค๋ฉด ๊ฒŒ์ž„์—์„œ ์ด๊ธฐ๊ฒŒ ๋œ๋‹ค. ์ˆซ์ž์˜ ๋ฒ”์œ„๊ฐ€ ๋„ˆ๋ฌด ํฌ๋ฉด 3๊ฐœ์˜ ์ˆซ์ž๊ฐ€ ์ผ์น˜ํ•  ๊ฐ€๋Šฅ์„ฑ์ด ๋‚ฎ์•„ ์ˆซ์ž์˜ ๋ฒ”์œ„๋ฅผ 0~2๋กœ ์ œํ•œํ•œ๋‹ค. ๋žœ๋ค ์ •์ˆ˜ ์ƒ์„ฑ์€ ๋ฌธ์ œ 5๋ฒˆ์˜ ํžŒํŠธ๋ฅผ ์ฐธ๊ณ ํ•˜๋ผ. ์„ ์ˆ˜๋Š” Player ํด๋ž˜์Šค๋กœ ์ž‘์„ฑํ•˜๊ณ , 2๋ช…์˜ ์„ ์ˆ˜๋Š” ๋ฐฐ์—ด๋กœ ๊ตฌ์„ฑํ•˜๋ผ. ๊ทธ๋ฆฌ๊ณ  ๊ฒŒ์ž„์€ GamblingGame ํด๋ž˜์Šค๋กœ ์ž‘์„ฑํ•˜๋ผ. Objective & Hints: ์—ฌ๋Ÿฌ ํด๋ž˜์Šค๋กœ ์ด๋ฃจ์–ด์ง„ ๊ฐ์ฒด ์ง€ํ–ฅ ํ”„๋กœ๊ทธ๋ž˜๋ฐ ์—ฐ์Šต ...

March 4, 2020 ยท 2 min ยท Sobamemil
๐Ÿ’ป Dev & CSC++ Programming

C++ Programming Ch.3 Exercise 5 Solution

Problem: ๋žœ๋ค ์ˆ˜๋ฅผ ๋ฐœ์ƒ์‹œํ‚ค๋Š” Random ํด๋ž˜์Šค๋ฅผ ๋งŒ๋“ค์ž. Random ํด๋ž˜์Šค๋ฅผ ์ด์šฉํ•˜์—ฌ ๋žœ๋ค ํ•œ ์ •์ˆ˜๋ฅผ 10๊ฐœ ์ถœ๋ ฅํ•˜๋Š” ์‚ฌ๋ก€๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค. Random ํด๋ž˜์Šค๊ฐ€ ์ƒ์„ฑ์ž, next(), nextInRange()์˜ 3๊ฐœ์˜ ๋ฉค๋ฒ„ ํ•จ์ˆ˜๋ฅผ ๊ฐ€์ง€๋„๋ก ์ž‘์„ฑํ•˜๊ณ  main() ํ•จ์ˆ˜์™€ ํ•ฉ์ณ ํ•˜๋‚˜์˜ cpp ํŒŒ์ผ์— ๊ตฌํ˜„ํ•˜๋ผ. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 int main() { Random r; cout << "-- 0์—์„œ " << RAND_MAX << "๊นŒ์ง€์˜ ๋žœ๋ค ์ •์ˆ˜ 10 ๊ฐœ--" << endl; for(int i=0; i<10; i++) { int n = r.next(); // 0์—์„œ RAND_MAX(32767) ์‚ฌ์ด์˜ ๋žœ๋คํ•œ ์ •์ˆ˜ cout << n << ' '; } cout << endl << endl << "-- 2์—์„œ " << "4 ๊นŒ์ง€์˜ ๋žœ๋ค ์ •์ˆ˜ 10 ๊ฐœ --" << endl; for(int i=0; i<10; i++) { int n = r.nextInRange(2,4); // 2์—์„œ 4 ์‚ฌ์ด์˜ ๋žœ๋คํ•œ ์ •์ˆ˜ cout << n << ' '; } cout << endl; } Objective & Hints: ...

March 3, 2020 ยท 2 min ยท Sobamemil