How to Sum a One-Dimensional Array of Integers from Keyboard Input in Various Programming Languages

When working with programming, one common task is to input data from a user and process it. A frequent requirement is to work with a one-dimensional array to accept and sum up 10 elements from the keyboard. This article will demonstrate how this can be accomplished in Python and C, with a focus on error handling.

Python Example: Summing Values in an Array

Creating and summing a one-dimensional array in Python is relatively straightforward. Here's a step-by-step guide:

Initialization and Input

Create an empty list to store the array. Loop through the required number of times, prompting the user for integer input.

numbers  []for i in range(10):    while True:        try:            num  int(input("Enter an integer: "))            (num)            break        except ValueError:            print("Invalid input. Please enter an integer.")

Summation and Output

Use the built-in sum() function to calculate the total of the integers in the array. Display the result to the user.

total_sum  sum(numbers)print(f"Total sum of the array: {total_sum}")

Understanding the Python Code

Array Initialization: An empty list numbers is created to store the integer values. Input Loop: A for loop runs 10 times, prompting the user to enter an integer each time. A nested while loop ensures that the input is a valid integer. Summation: The built-in sum() function calculates the total of the integers in the list. Output: The result is printed to the console.

C Example: Summing Values with Comprehensive Error Checking

Working with C can be more complex due to the need for manual error handling. Below is an example where we use a custom decimal input routine to handle a plethora of edge cases, including integer overflow.

Custom Decimal Input Routine

#include #include #include int getint(int *X) {    int c, X  0, coef  1;    for (;;) {        c  getchar();        if (c  EOF) {            return -1;        } else if (c > '0'  c  1) {                if (X > INT_MAX / 10) {                    goto fail;                } else if (INT_MAX - X  INT_MIN / 10) {                    goto fail;                } else if (INT_MIN - X  INT_MAX - a[i]) {            s  INT_MAX;        } else if (s   a[i] 

Explanation

Input Handling: The code includes a custom input routine getint() to handle errors and edge cases. Array Initialization and Summation: The array a is initialized to store 10 integers. The s variable keeps track of the total sum. Error Handling: The code checks for input errors and integer overflows, using the errno variable to handle issues. Output: The final sum is printed to the console.

Conclusion

Working with one-dimensional arrays in different programming languages involves both simple and complex considerations. Python's built-in functions make the process straightforward, while C requires more manual handling and error checking.

If you need more information on other programming languages or have specific requirements, feel free to let me know!