21...............................
They all have ads. Some have inappropriate ads while some have irrelevant ads with respect to the website your on.
Answer:
A wave of sound!
Explanation:
sound waves are sound but sound comes in different wavelengths
Answer:
While selecting the access control system (software or hardware), there are many factors that influence it and those factors are campus location, network capabilities, number of users using it, size of campus, the motive for using it, etc.
Explanation:
The access control system is electronic device that needs to be connected to the network for providing security control and authorization to the user to enter into the Campus.
Access control systems are used to control access into premises or any IT area which is control in two ways either in a physical way or a logical way.
Answer:
In Python:
import os.path
from os import path
fname = input("Filename: ")
if path.exists(fname):
with open(fname) as file_in:
lines = []
for line in file_in:
lines.append(line.rstrip('\n'))
f = open("stat.txt","r+")
f.truncate(0)
f = open("stat.txt", "a")
f.write("Names\tTotal\tSubjects\tAverage\n")
for i in range(len(lines)):
rowsum = 0; count = 0
nm = lines[i].split()
for j in nm:
if (j.isdecimal()):
count+=1
rowsum+=int(j)
average = rowsum/count
f.write(nm[0]+"\t %3d\t %2d\t\t %.2f\n" % (rowsum, count, average))
f.close()
else:
print("File does not exist")
Explanation:
See attachment for explanation where comments were used to explain each line
