4. Some examples

• Make a program that reads a vector of 5 integers and displays the vector.

vector = [] i = 1 while i <= 5: n = int(input("Enter a number: ")) vector.append(n) i = i + 1 print("Read vector:", vector)

• Make a program that reads a vector of ten real numbers and displays them in reverse order.

vector = [] i = 1 while i <= 10: n = float(input("Enter a number: ")) vector.append(n) i += 1 i = 9 while i >= 0: print(vector[i]) i -= 1

• Make a program that reads four grades, displays the grades, and the average on the screen.

grades = [] i = 1 while i <= 4: n = float(input("Grade: ")) grades.append(n) i += 1 suma = 0 i = 0 while i <= 3: suma += grades[i] i += 1 print("Grades:", grades) print("Average: %4.2f" % (suma / 4))

• Another way of doing the same thing.

grades = [] i = 1 suma = 0 while i <= 4: n = float(input("Grade: ")) grades.append(n) suma += n i += 1 print("Grades:", grades) print("Average: %4.2f" % (suma / 4))

• Make a program that reads a vector of 10 lowercase characters, and tells how many consonants were read.

letters = [] i = 1 while i <= 10: letters.append(input("Letter: ")) i += 1 i = 0 cont = 0 while i <= 9: if letters[i] not in "aeiou": cont += 1 i += 1 print("%d consonants were read" % cont)

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