程序以C ++打印2D形状
在本教程中，我们将讨论打印2D形状的程序。
为此，我们将提供制作形状所需的各种参数，例如半径，边长和边宽等。我们的任务是相应地打印没有厚度的形状。
示例
#include <bits/stdc++.h>
using namespace std;
void print_circle(int radius){
for (int i = 0; i <= 2 * radius; i++){
for (int j = 0; j <= 2 * radius; j++){
double distance = sqrt((double)(i - radius) * (i -
radius) + (j - radius) * (j - radius));
if (distance > radius - 0.5 &&
distance < radius + 0.5)
printf("*");
else
printf(" ");
}
printf("\n");
}
}
void print_rectangle(int l, int b){
int i, j;
for (i = 1; i <= l; i++){
for (j = 1; j <= b; j++)
if (i == 1 || i == l || j == 1 || j == b)
printf("*");
else
printf(" ");
printf("\n");
}
}
void print_triangle(int side){
int i, j;
for (i = 1; i <= side; i++){
for (j = i; j < side; j++)
printf(" ");
for (j = 1; j <= (2 * i - 1); j++){
if (i == side || j == 1 || j == (2 * i - 1))
printf("*");
else
printf(" ");
}
printf("\n");
}
}
void print_hexagon(int length){
int l, j, i, k;
for (i = 1, k = length, l = 2 * length - 1; i < length;
i++, k--, l++){
for (j = 0; j < 3 * length; j++)
if (j >= k && j <= l)
printf("*");
else
printf(" ");
printf("\n");
}
for (i = 0, k = 1, l = 3 * length - 2; i < length; i++,
k++, l--){
for (j = 0; j < 3 * length; j++)
if (j >= k && j <= l)
printf("*");
else
printf(" ");
printf("\n");
}
}
void calc_pattern(int choice){
int radius, length, breadth, side;
switch (choice){
case 1:
radius = 4;
print_circle(radius);
break;
case 2:
length = 3, breadth = 8;
print_rectangle(length, breadth);
break;
case 3:
side = 6;
print_triangle(side);
break;
case 4:
side = 4;
print_hexagon(side);
break;
default:
printf("Invalid choice\n");
}
}
int main(){
int choice = 1;
calc_pattern(choice);
return 0;
}输出结果
*****
** **
** **
* *
* *
* *
** **
** **
*****