Functional requirements
Write a console application , Receive user input from the keyboard 5 The value of the number , And take this 5 Add the values and display them on the console .
Program analysis
1. Define loop variables count, And assign the initial value to the cyclic variable 1, It is used to count the number of data currently read .
2. Define the summation variable sum, Used to save the sum value after each accumulation , Because there is no data to accumulate at first , Therefore, the initial value is 1.
3. Use while loop , Read data from the keyboard in turn , And add the read data to the variable sum in .
4. When the loop variable count Less than or equal to 5 when , stay while The statement of the loop structure continues to execute , Until the cycle condition is not met .
The sample code
sum = 0
count = 1
while (count <= 5):
num = float(input(" Please enter the first %d Data ：" % count))
sum += num
count += 1
print(" The sum of five numbers is %.2f" % sum)Running results
Functional requirements
Write a console application , Use while It's a loop 1 To 5 The product of the . The o 1 * 2 * 3 * 4 * 5 Value .
The sample code
sum = 1
count = 1
while count <= 5:
sum *= count
count += 1
print("1 * 2 * 3 * 4 * 5 = %d" % sum)Running results
