fix this code
start_num = int(input("Enter the first number: "))
end_num = int(input("Enter the second number: "))
# Initialize sum
num_sum = 0
# Use for loop to add numbers
for i in range(start_num, end_num+1):
num_sum += i
print("The total sum is: ", num_sum)
There is no error in the given code. However, you can improve it by adding input validation to ensure that the second number is greater than the first number. Here's the corrected code:
```python
start_num = int(input("Enter the first number: "))
end_num = int(input("Enter the second number (must be greater than the first number): "))
# Input validation
while end_num <= start_num:
end_num = int(input("Invalid input. Enter the second number (must be greater than the first number): "))
# Initialize sum
num_sum = 0
# Use for loop to add numbers
for i in range(start_num, end_num+1):
num_sum += i
print("The total sum is:", num_sum)
```
With this modification, the code will keep asking for the second number until a valid input is provided.