C/C++ - 控制臺畫圓
阿新 • • 發佈:2018-02-10
ace char sqrt return oid params 圖片 平面 ios
書上看到一個畫空心圓的題,於是用C++寫了一個實心圓...
#include <iostream> #include <math.h> using namespace std; class DrawCircle { public: void drawCircle(int r) { int x, y; int params_1 = 2; int params_2 = 5; for (y = 0; y < r; y++) { x = -(int)sqrt(2 * y * r - y * y) + r; for (int i = 0; i < params_1*x; i++) cout << ‘ ‘; cout << ‘*‘; for (int i = ((int)sqrt(2 * y * r - y * y) + r - x)*params_1 + params_2; i >= 0; i--) cout << (i % 2 == 0 ? ‘*‘ : i % 3 == 0 ? ‘$‘ : ‘%‘); cout << ‘*‘ << endl; } for (; y >= 0; y--) { x = -(int)sqrt(2 * y * r - y * y) + r; for (int i = 0; i < params_1*x; i++) cout << ‘ ‘; cout << ‘*‘; for (int i = ((int)sqrt(2 * y * r - y * y) + r - x)*params_1 + params_2; i >= 0; i--) cout << (i % 2 == 0 ? ‘*‘ : i % 3 == 0 ? ‘$‘ : ‘%‘); cout << ‘*‘ << endl; } } }; int main() { DrawCircle dc; int r = 12; dc.drawCircle(r); getchar(); return 0; }
運行結果:
= =...很菜,只能畫這種單調的平面實心圓了,知道圓的方程就行了。
C/C++ - 控制臺畫圓