I wrote this simple program to demonstrate how to write a running sum of number using ordinal numbers in C++ programming language.
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Sample Program Output

Program Listing
Program Listing
// ordinal.cpp
// Jake Rodriguez Pomperada
// May 26, 2020      Tuesday    10:51 PM

 #include <iostream>
 #include <string>

 using namespace std;
string ordinal(int i)
int mod100 = 0, mod10 = 0;

mod100 = (i % 100);
mod10 = (i % 10);
if (mod10 == 1 && mod100 != 11) {
return "st";
} else if (mod10 == 2 && mod100 != 12) {
 return "nd";
else if (mod10 == 3 && mod100 != 13) {
return "rd";
} else {
return "th";

 int main()
   int num_items = 0, sum = 0, num;
   cout <<"\n\n";
   cout <<"\tRunning Sum of Numbers Using Ordinal Indicators in C++";
   cout <<"\n\n";
   cout << "\tHow many items: ";
   cin >> num_items;
   for (int i = 1; i <= num_items; ++i)
    cout << "\tGive value in the " << i << ordinal(i) << " item: ";
    cin >> num;
    sum += num;
   cout << "\tThe running sum is: " << sum << '\n';
   cout <<"\n";
   cout <<"\tEnd of the Program";
   cout <<"\n";

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