One thing that we found very difficult in Argentina, but especially so in Salta, was the challenge of finding exact change. Each and every time we went to pay for something (and it's almost exclusively cash-only everywhere), the cashier would beg us to pay in exact change. Due to inflation, there is a country-wide shortage of smaller bills, and it seemed that there also weren't nearly enough coins to fill the gap. In Salta, almost every time we were owed a peso or two as change (1 Peso = 9¢) as change, we would instead be asked to accept a small candy. Or in bakeries, we would be handed a small, hard, dry biscuit to make up the extra peso! It wasn't so much the money we were worried about missing out on, rather the fact that it was next to impossible to accumulate small change and so this was constantly happening to us over and over again.
Along with the inconvenience of getting biscuits instead of pesos, the other giant effect of inflation that we saw all the time as tourists was increased prices. On menus, in tour agencies, in hostels, and on buses - anywhere that prices were advertised - you would see a thick layer of countless pieces of tape, and the new price written in sharpie. It seems that rather than continue printing pricing materials that would quickly be out of date as prices had to rise, people had simply taken to noting the new prices in sharpie. This also meant that it was next to impossible to do any research on how much a particular hostel or activity might cost - prices went up from one month to the next and any online information was very quickly made unreliable.
The last hassle to deal with was ATMs constantly running out of cash, or only dispensing very small amounts (as little as $100!) while charging exorbitant fees. It was quite common to come across a long line at an ATM, only to then see everyone walk away in disgust as the person at the head of the line reported that there was no more money. There were some stretches where it felt like we were taking money out every single day!
All of these things were a pain for us to deal with, but its a lot worse to think about the struggles faced by so many Argentinians whose salaries certainly don't increase as the price of everything else does.