import tensorflow as tf

c1 = tf.constant([[3,3]])

c2  = tf.constant([[3],[2]])

product = tf.matmul(c1 , c2)

print(product)

sess = tf.Session()

reslut = sess.run(product)

print(reslut)

#定义会话，在会话中执行语句
with tf.Session() as sess:

    reslut = sess.run(product)

    print(reslut)

x = tf.Variable([1,2])

c = tf.constant([3,3])

#减法op

sub = tf.subtract(x,c)

#加法op

add = tf.add(x,c)

#变量初始化

init = tf.global_variables_initializer()  

#创建session 并创建默认图

with tf.Session() as sess:

    sess.run(init)

    print(sess.run(sub))

    print(sess.run(add))