防止用户输入会导致整数溢出的值

def validate_input(value):
    try:
        int_value = int(value)
        if int_value < -2**31 or int_value > 2**31 - 1:
            raise ValueError("Input out of valid integer range")
        return int_value
    except ValueError as e:
        print(f"Invalid input: {e}")
        return None

try:
    large_number = int(input("Enter a number: "))
except OverflowError:
    print("Number too large to handle.")

from decimal import Decimal, Overflow

try:
    large_number = Decimal(input("Enter a number: "))
except Overflow:
    print("Number too large to handle.")

#include <limits.h>
#include <stdio.h>

int safe_add(int a, int b) {
    if ((b > 0) && (a > INT_MAX - b)) {
        printf("Overflow detected!\n");
        return INT_MAX;
    } else if ((b < 0) && (a < INT_MIN - b)) {
        printf("Underflow detected!\n");
        return INT_MIN;
    }
    return a + b;
}