打印二维形状的程序
接受用户选择并根据选择打印 2D 形状。
只有两个维度（例如宽度和高度）而没有厚度的形状。正方形、圆形、三角形等是二维对象。这些形状主要包含数学图形，例如直线、正方形、三角形、矩形和六边形。
形状如下：
Circle : Radius = 4
*****
** **
** **
* *
* *
* *
** **
** **
*****
Square : Side = 4
****
* *
* *
****
Rectangle : Length = 3, Breadth = 8
********
* *
********
Triangle : Side = 4
*
* *
* *
*******
Hexagon : Side = 4
****
******
********
**********
********
******
****
按照下面的代码打印不同的 2D 形状：
C++
// C++ implementation of menu driven
// programme to print solid 2D shapes
#include
using namespace std;
// Function to print a circle
void 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");
}
}
// Function to print a square or a rectangle
void 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");
}
}
// Function to print triangle
void 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");
}
}
// Function to print hexagon
void 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");
}
}
// Function takes user choice
void printPattern(int choice)
{
int radius, length, breadth, side;
switch (choice)
{
// For Circle
case 1:
radius = 4;
circle(radius);
break;
// For rectangle/square
case 2:
length = 3, breadth = 8;
rectangle(length, breadth);
break;
// For triangle
case 3:
side = 6;
triangle(side);
break;
// For hexagon
case 4:
side = 4;
hexagon(side);
break;
default:
printf("Wrong choice\n");
}
}
// Driver Function
int main()
{
int choice = 3;
printPattern(choice);
return 0;
} Java
// Java implementation of menu driven
// programme to print solid 2D shapes
class GFG
{
// Function to print a circle
static void circle(int radius)
{
for (int i = 0; i <= 2 * radius; i++)
{
for (int j = 0; j <= 2 * radius; j++)
{
double distance =
Math.sqrt((double)(i - radius)
* (i - radius) + (j - radius)
* (j - radius));
if (distance > radius - 0.5 &&
distance < radius + 0.5)
System.out.print("*");
else
System.out.print(" ");
}
System.out.println();
}
}
// Function to print a square or a rectangle
static void 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)
System.out.print("*");
else
System.out.print(" ");
System.out.println();
}
}
// Function to print triangle
static void triangle(int side)
{
int i, j;
for (i = 1; i <= side; i++)
{
for (j = i; j < side; j++)
System.out.print(" ");
for (j = 1; j <= (2 * i - 1); j++)
{
if (i == side || j == 1 ||
j == (2 * i - 1))
System.out.print("*");
else
System.out.print(" ");
}
System.out.println();
}
}
// Function to print hexagon
static void 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)
System.out.print("*");
else
System.out.print(" ");
System.out.println();
}
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)
System.out.print("*");
else
System.out.print(" ");
System.out.println();
}
}
// Function takes user choice
static void printPattern(int choice)
{
int radius, length, breadth, side;
switch (choice)
{
// For Circle
case 1:
radius = 4;
circle(radius);
break;
// For rectangle/square
case 2:
length = 3; breadth = 8;
rectangle(length, breadth);
break;
// For triangle
case 3:
side = 6;
triangle(side);
break;
// For hexagon
case 4:
side = 4;
hexagon(side);
break;
default:
System.out.print("Wrong choice\n");
}
}
// Driver Program to test above function
public static void main(String arg[])
{
int choice = 3;
printPattern(choice);
}
}
// This code is contributed by Anant Agarwal.Python3
# Python implementation to
# print solid 2D shapes
import math
# def to print a circle
def circle(radius) :
for i in range(0, 2 *
radius + 1) :
for j in range(0, 2 *
radius + 1) :
distance = math.sqrt((i - radius) *
(i - radius) +
(j - radius) *
(j - radius))
if (distance > radius - 0.5 and
distance < radius + 0.5) :
print ("*", end = "")
else :
print (" ", end = "")
print ()
# def to print a
# square or a rectangle
def rectangle(l, b) :
for i in range(1, l + 1) :
for j in range(1, b + 1) :
if (i == 1 or i == l or
j == 1 or j == b) :
print ("*", end = "")
else :
print (" ", end = "")
print ()
# def to print triangle
def triangle(side) :
for i in range(1, side + 1) :
for j in range(i, side) :
print (" ", end = "")
for j in range(1, 2 * i) :
if (i == side or j == 1 or
j == (2 * i - 1)) :
print ("*", end = "")
else :
print (" ", end = "")
print ()
# def to print hexagon
def hexagon(length) :
k = length
l = 2 * length - 1
for i in range(1, length) :
for j in range(0, 3 * length) :
if (j >= k and j <= l) :
print ("*", end = "")
else :
print (" ", end = "")
print ()
k = k - 1
l = l + 1
k = 1
l = 3 * length - 2
for i in range(0, length) :
for j in range(0, 3 * length) :
if (j >= k and j <= l) :
print ("*", end = "")
else :
print (" ", end = "")
print ()
k = k + 1
l = l - 1
# def takes user choice
def printPattern(choice) :
# For Circle
if(choice == 1) :
circle(4)
# For rectangle/square
elif(choice == 2) :
rectangle(3, 8)
# For triangle
elif(choice == 3) :
triangle(6)
# For hexagon
elif(choice == 4) :
hexagon(4)
# Driver Code
choice = 3
printPattern(choice)
# This code is contributed by
# Manish Shaw(manishshaw1)C#
// C# implementation of menu driven
// programme to print solid 2D shapes
using System;
class GFG
{
// Function to print a circle
static void circle(int radius)
{
for (int i = 0; i <= 2 * radius; i++)
{
for (int j = 0; j <= 2 * radius; j++)
{
double distance =
Math.Sqrt((double)(i - radius)
* (i - radius) + (j - radius)
* (j - radius));
if (distance > radius - 0.5 &&
distance < radius + 0.5)
Console.Write("*");
else
Console.Write(" ");
}
Console.WriteLine();
}
}
// Function to print a square or a rectangle
static void 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)
Console.Write("*");
else
Console.Write(" ");
Console.WriteLine();
}
}
// Function to print triangle
static void triangle(int side)
{
int i, j;
for (i = 1; i <= side; i++)
{
for (j = i; j < side; j++)
Console.Write(" ");
for (j = 1; j <= (2 * i - 1); j++)
{
if (i == side || j == 1 ||
j == (2 * i - 1))
Console.Write("*");
else
Console.Write(" ");
}
Console.WriteLine();
}
}
// Function to print hexagon
static void 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)
Console.Write("*");
else
Console.Write(" ");
Console.WriteLine();
}
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)
Console.Write("*");
else
Console.Write(" ");
Console.WriteLine();
}
}
// Function takes user choice
static void printPattern(int choice)
{
int radius, length, breadth, side;
switch (choice)
{
// For Circle
case 1:
radius = 4;
circle(radius);
break;
// For rectangle/square
case 2:
length = 3; breadth = 8;
rectangle(length, breadth);
break;
// For triangle
case 3:
side = 6;
triangle(side);
break;
// For hexagon
case 4:
side = 4;
hexagon(side);
break;
default:
Console.Write("Wrong choice");
break;
}
}
// Driver Program to test above function
public static void Main()
{
int choice = 3;
printPattern(choice);
}
}
// This code is contributed by vt_m.PHP
$radius - 0.5 &&
$distance < $radius + 0.5)
echo "*";
else
echo " ";
}
echo "\n";
}
}
// Function to print a
// square or a rectangle
function rectangle($l, $b)
{
for ($i = 1; $i <= $l; $i++)
{
for ($j = 1; $j <= $b; $j++)
if ($i == 1 || $i == $l ||
$j == 1 || $j == $b)
echo "*";
else
echo " ";
echo "\n";
}
}
// Function to print triangle
function triangle($side)
{
for ($i = 1; $i <= $side; $i++)
{
for ($j = $i; $j < $side; $j++)
echo " ";
for ($j = 1; $j <= (2 * $i - 1);
$j++)
{
if ($i == $side || $j == 1 ||
$j == (2 * $i - 1))
echo "*";
else
echo " ";
}
echo "\n";
}
}
// Function to print hexagon
function hexagon($length)
{
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 <= $l)
echo "*";
else
echo " ";
echo "\n";
}
for ($i = 0, $k = 1, $l = 3 * $length - 2;
$i < $length; $i++, $k++, $l--)
{
for ($j = 0; $j < 3 * $length; $j++)
if ($j >= $k && $j <= $l)
echo "*";
else
echo " ";
echo "\n";
}
}
// Function takes user choice
function printPattern($choice)
{
switch ($choice)
{
// For Circle
case 1:
$radius = 4;
circle($radius);
break;
// For rectangle/square
case 2:
$length = 3;
$breadth = 8;
rectangle($length, $breadth);
break;
// For triangle
case 3:
$side = 6;
triangle($side);
break;
// For hexagon
case 4:
$side = 4;
hexagon($side);
break;
default:
echo "Wrong choice\n";
}
}
// Driver Code
$choice = 3;
printPattern($choice);
// This code is contributed by Mithun Kumar
?>输出 ：
*
* *
* *
* *
* *
***********