|
|
| (사용자 2명의 중간 판 16개는 보이지 않습니다) |
| 1번째 줄: |
1번째 줄: |
| 시리즈:초급 프로그래밍 c++
| |
|
| |
|
| c++ 초반
| |
|
| |
| <syntaxhighlight lang="c++">
| |
| #include <iostream>
| |
| using namespace std;
| |
|
| |
| class Cube
| |
| {
| |
| public:
| |
| int x, y, z;
| |
| int Volume, Area;
| |
| Cube();
| |
| Cube( int x, int y, int z );
| |
| };
| |
|
| |
| Cube::Cube( int x, int y, int z) {
| |
| this->x = x, this->y = y, this->z = z;
| |
| Volume = x * y * z;
| |
| Area = x * y * 2 + y * z * 2 + z * x * 2;
| |
| }
| |
|
| |
| Cube::Cube() :Cube ( 1, 1, 1) {}
| |
|
| |
| int main(void)
| |
| {
| |
| Cube *boxes = new Cube[3];
| |
| boxes[0] = Cube();
| |
| boxes[1] = Cube( 3, 3, 3 );
| |
| boxes[2] = Cube( 4, 4, 4 );
| |
|
| |
| cout << "부피" << boxes->Volume << endl;
| |
| cout << "겉면적" << boxes->Area << endl;
| |
| boxes++;
| |
| cout << "부피" << boxes->Volume << endl;
| |
| cout << "겉면적" << boxes->Area << endl;
| |
| boxes++;
| |
| cout << "부피" << boxes->Volume << endl;
| |
| cout << "겉면적" << boxes->Area << endl;
| |
| }
| |
|
| |
| </syntaxhighlight>
| |
|
| |
| 확률과 통계와 c++
| |
|
| |
| <syntaxhighlight lang="c++">
| |
| #include <iostream>
| |
| using namespace std;
| |
|
| |
| class Data
| |
| {
| |
| private:
| |
| float *data;
| |
| int size = 0;
| |
| public:
| |
| float sum = 0;
| |
| float mean = 0;
| |
| float variance = 0;
| |
|
| |
| Data(int size, float *data)
| |
| {
| |
| this->size = size;
| |
| this->data = data;
| |
| };
| |
|
| |
| void getsum()
| |
| {
| |
| int i = 0;
| |
| while ( i < size )
| |
| {
| |
| sum = sum + *data;
| |
| data++, i++;
| |
| }
| |
| data = data - size;
| |
| }
| |
|
| |
| void getmean()
| |
| {
| |
| mean = sum / size;
| |
| }
| |
|
| |
| void getvariance()
| |
| {
| |
| float sum = 0;
| |
| for (int i = 0 ; i < size ; i++)
| |
| {
| |
| float meanMINUSdata = mean - *data;
| |
| data++;
| |
| sum = sum + meanMINUSdata * meanMINUSdata;
| |
| }
| |
| data = data - size;
| |
| variance = sum / (double) size;
| |
| }
| |
|
| |
| };
| |
|
| |
| int main(void)
| |
| {
| |
| cout << "자료의 크기 ? >>";
| |
| int size;
| |
| cin >> size;
| |
|
| |
| float *array = new float [size];
| |
| for (int i = 0 ; i < size ; i++)
| |
| cin >> array[i];
| |
|
| |
| Data data1(size, array);
| |
| data1.getsum();
| |
| cout << "합계 : " << data1.sum << endl;
| |
| data1.getmean();
| |
| cout << "평균 : " << data1.mean << endl;
| |
| data1.getvariance();
| |
| cout << "분산 : " << data1.variance << endl;
| |
|
| |
| return 0;
| |
| }
| |
| </syntaxhighlight>
| |