In C++, (Adding Large Integers) | In C++, the largest int value is 2147483647. So, an integer larger than this cannot be stored and processed as an integer. Similarly, if the sum or product of two positive integers is greater than 2147483647, the result will be incorrect. One way to store and manipulate large integers is to store each individual digit of the number in an array.

Write a program that inputs two positive integers of, at most, 20 digits and outputs the sum of the numbers. If the sum of the numbers has more than 20 digits, output the sum with the message The sum of the numbers overflows.

Your program must, at least, contain a function to read and store a number into an array and another function to output the sum of the numbers. (Hint: Read numbers as strings and store the digits of the number in the reverse order.)

included file: (main.cpp)

#include

#include

#include

using namespace std;

const int DIGITS = 20;

int readNum(int list[], int& length);

void sumNum(int list1[], int numOfElementsList1,

int list2[], int numOfElementsList2);

int main()

{

// Write your main here

return 0;

}

+ main.cpp 1 #include 2 #include 3 #include 4 5 using namespace std; 6 7 const int DIGITS = 20; 8 9 int readNum(int list[], int& length); 10 11 void sumNum(int listi[], int numofElementsListi, 12 int list2[], int numofElementsList2); 13 14 int main() 15 { 16 // Write your main here 17 return 0; 18 } 19