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(사용자 2명의 중간 판 15개는 보이지 않습니다) |
1번째 줄: |
1번째 줄: |
| 시리즈:초급 프로그래밍 c++
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| c++ 초반
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| <syntaxhighlight lang="c++">
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| #include <iostream>
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| using namespace std;
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|
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| class Cube
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| {
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| public:
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| int x, y, z;
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| int Volume, Area;
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| Cube();
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| Cube( int x, int y, int z );
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| };
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|
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| Cube::Cube( int x, int y, int z) {
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| this->x = x, this->y = y, this->z = z;
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| Volume = x * y * z;
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| Area = x * y * 2 + y * z * 2 + z * x * 2;
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| }
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| Cube::Cube() :Cube ( 1, 1, 1) {} //위임 생성자
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|
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| int main(void)
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| {
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| Cube *boxes = new Cube[3];
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| boxes[0] = Cube();
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| boxes[1] = Cube( 3, 3, 3 );
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| boxes[2] = Cube( 4, 4, 4 );
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|
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| cout << "부피" << boxes->Volume << endl;
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| cout << "겉면적" << boxes->Area << endl;
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| boxes++;
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| cout << "부피" << boxes->Volume << endl;
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| cout << "겉면적" << boxes->Area << endl;
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| boxes++;
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| cout << "부피" << boxes->Volume << endl;
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| cout << "겉면적" << boxes->Area << endl;
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| }
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|
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| </syntaxhighlight>
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| 확률과 통계와 c++
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| <syntaxhighlight lang="c++">
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| #include <iostream>
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| using namespace std;
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|
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| class Data
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| {
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| private:
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| float *data;
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| int size = 0;
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| public:
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| float sum = 0;
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| float mean = 0;
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| float variance = 0;
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|
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| Data(int size, float *data)
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| {
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| this->size = size;
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| this->data = data;
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| };
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|
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| void getsum()
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| {
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| int i = 0;
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| while ( i < size )
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| {
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| sum = sum + *data;
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| data++, i++;
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| }
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| data = data - size;
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| }
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| void getmean()
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| {
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| mean = sum / size;
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| }
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| void getvariance()
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| {
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| float sum = 0;
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| for (int i = 0 ; i < size ; i++)
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| {
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| float meanMINUSdata = mean - *data;
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| data++;
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| sum = sum + meanMINUSdata * meanMINUSdata;
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| }
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| data = data - size;
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| variance = sum / (double) size;
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| }
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|
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| };
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|
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| int main(void)
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| {
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| cout << "자료의 크기 ? >>";
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| int size;
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| cin >> size;
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|
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| float *array = new float [size];
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| for (int i = 0 ; i < size ; i++)
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| cin >> array[i];
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| Data data1(size, array);
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| data1.getsum();
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| cout << "합계 : " << data1.sum << endl;
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| data1.getmean();
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| cout << "평균 : " << data1.mean << endl;
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| data1.getvariance();
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| cout << "분산 : " << data1.variance << endl;
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|
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| return 0;
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| }
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| </syntaxhighlight>
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