add raspberrypi/socket/(python)

c_language/gcd.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+int gcd(int a, int b);
+int main(int argc, const char *argv[])
+{
+	int a,b;
+	printf("Input to number e.g: 8 16\n");
+	scanf("%d %d",&a,&b);
+	printf("最大公约数为: %d\n",gcd(a,b));
+	// 最小公倍数公式: |a x b| / gcd
+	printf("最小公倍数为: %d\n",(abs(a)*abs(b))/gcd(a,b));
+	return 0;
+}
+/*辗转相除法求最大公约数*/
+int gcd(int a, int b)
+{
+	int c;
+	while (a != 0) {
+		c = a;
+	       	a = b % a;
+		b = c;
+	}
+	return b;
+}

c_language/my_sqrt.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <math.h>
+float my_sqrt(float a);
+int main(int argc, const char *argv[])
+{
+	float a;
+	printf("Input the num to cal root: \n");
+	scanf("%f",&a);
+	printf("%.0f 的平方根等于: %.2f\n",a,my_sqrt(a));
+	return 0;
+}
+/*迭代法求平方根*/
+float my_sqrt(float a)
+{
+	float x0,x1;
+	x0 = a / 2;
+	x1 = (x0 + a / x0) / 2;
+	while (fabs(x1 - x0) >= 1e-5) {
+		x0 = x1;
+		x1 = (x0 + a / x0) / 2;
+	}
+	return x1;
+}

raspberrypi/socket/client.py

@@ -0,0 +1,9 @@
+import socket
+HOST = '127.0.0.1'
+PORT = 50009
+s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+s.connect((HOST,PORT))
+s.sendall('Hello,World')
+data = s.recv(1024)
+s.close()
+print 'Received', repr(data)

raspberrypi/socket/server.py

@@ -0,0 +1,15 @@
+import socket
+HOST = ''
+PORT = 50009
+s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
+s.bind((HOST,PORT))
+s.listen(1)
+conn, addr = s.accept()
+print 'Conneted by', addr
+while True:
+    data = conn.recv(1024)
+    if not data:
+        break
+    print data
+    conn.sendall(data)
+conn.close()