for (I = I; I <= XIV; I++) {
printf("Pope Leo %d is best Pope Leo!\n", I);
}
Interestingly, the authors use circumlocutions to avoid naming the Arabic numerals for what they are, while the ones used in their example are known as Eastern Arabic Numerals.
They clarified in the footnote that this is to prevent confusion as many readers may not know that Arabic numerals are the widely used ones. It is indeed confusing that what the world uses as numerical lingua-franca are Arabic numerals, and what are used in Arabic script (and India sometimes) are called Eastern Arabic Numerals.
https://en.wikipedia.org/wiki/Arabic_numerals_(disambiguatio...