实验三

#ifndef GRAPH_H
#define GRAPH_H

class Graph {
    public:
        Graph(char ch, int n);   
        void draw();     
    private:
        char symbol;
        int size;
};


#endif



#include "graph.h" 
#include <iostream>
using namespace std;
 
Graph::Graph(char ch, int n): symbol(ch), size(n) {
}


void Graph::draw() {
    int i, j, k;
    for(i=1;i<=size;i++)
    {
        for (j = 1; j <= size - i; j++)
            cout << " ";
        for (k = 1; k <= 2 * i - 1; k++)
            cout << symbol;
        cout << endl;

    }
}



#include <iostream>
#include "graph.h"
using namespace std;

int main() {
    Graph graph1(‘*‘,5);
    graph1.draw();
    
    system("pause");
    system("cls");
    
    Graph graph2(‘$‘,7);
    graph2.draw();
    system("pause");
    
    return 0; 
}