生成一个100到200的随机数A，生成A个2到1000的随机数，将随机数10个一行读入一个文件，然后从文件读出并判断素数个数-creat a random "A"which is between 100 and 200, the creat "A" randoms, store the randoms in a file and 10 numbers as a line, get the number from the file ,caculate the number of prime num