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nata0808 [166]
3 years ago
9

Implement the function charCnt. charCnt is passed in a name of a file and a single character (type char). This function should o

pen the file, count the number of times the character is found within the file, close the file, and then return the count. If the file does not exist, this function should output an error message and then call the exit function to exit the program with an error value of 1.
Computers and Technology
1 answer:
SVEN [57.7K]3 years ago
7 0

Answer:

Answered below

Explanation:

//Program is written in Python programming language

def charCnt( fileName, char){

if not fileName.exists( ):

return sys.exit(1)

else:

openFile = open("$fileName.txt", "r")

readFile = openFile.read( )

fileLength = len (readFile)

count = 0

for character in range(fileLength):

if readFile[character] == char:

count++

openFile.close( )

return count

}

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andriy [413]

Answer:

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3 years ago
(Convert milliseconds to hours, minutes, and seconds) Write a function that converts milliseconds to hours, minutes, and seconds
ivanzaharov [21]

Answer:

I am writing the Python program. Let me know if you want the program in some other programming language.

def convertMillis(millis):  #function to convert milliseconds to hrs,mins,secs

   remaining = millis  # stores the value of millis to convert

   hrs = 3600000  # milliseconds in hour

   mins = 60000  # milliseconds in a minute

   secs = 1000  #milliseconds in a second

   hours =remaining / hrs  #value of millis input by user divided by 360000

   remaining %= hrs  #mod of remaining by 3600000

   minutes = remaining / mins  # the value of remaining divided by 60000

   remaining %= mins  #mod of remaining by 60000

   seconds = remaining / secs  

#the value left in remaining variable is divided by 1000

   remaining %= secs  #mod of remaining by 1000

   print ("%d:%d:%d" % (hours, minutes, seconds))

#displays hours mins and seconds with colons in between

   

def main():  #main function to get input from user and call convertMillis() to #convert the input to hours minutes and seconds

   millis=input("Enter time in milliseconds ")  #prompts user to enter time

   millis = int(millis)  #converts user input value to integer

   convertMillis(millis)   #calls function to convert input to hrs mins secs

main() #calls main() function

Explanation:

The program is well explained in the comments mentioned with each line of code. The program has two functions convertMillis(millis) which converts an input value in milliseconds to hours, minutes and seconds using the formula given in the program, and main() function that takes input value from user and calls convertMillis(millis) for the conversion of that input. The program along with its output is attached in screenshot.

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