How to get the last index in a for loop

External question — Stack Overflow Stack Exchange Author: Alister jordan Original post: https://stackoverflow.com/questions/63721860 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. i am coding in a language similar to c++ known as mql5.(for mt5 trading platform) they have many similarities... i have a for loop as shown below: void OnTick() // this functon basically executes the code after every price change. { for (int i = 0; i<5; i++) //the for loop function { Print(i); //this prints the loop } } the result of the code above with each price change overtime is: 13:27:18.706 0 13:27:18.706 1 13:27:18.706 2 13:27:18.706 3 13:27:18.706 4 13:27:18.900 0 13:27:18.900 1 13:27:18.900 2 13:27:18.900 3 13:27:18.900 4 question is, how do i access the last element in the index of the for loop and get it to print 4th index each time price changes? mql5 is somewhat similar as c++. is there anything i can carry from c++? eg 13:27:18.706 4 13:27:18.900 4

External answer — Stack Overflow Stack Exchange Author: Jan Schultke Original post: https://stackoverflow.com/a/63721892 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. All you need to do is pull i outside the loop: void OnTick() { int i = 0; for (; i < 5; i++) { Print(i); } // i is now one past the last index int last = i - 1; } If you know that you loop 5 times in advance, you could also obtain the last index using: int last = 5 - 1;

External answer — Stack Overflow Stack Exchange Author: Ted Lyngmo Original post: https://stackoverflow.com/a/63722014 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Don't use magic numbers. 5 is a magic number. Give it a meaningful name, like number_of_prices . constexpr size_t number_of_prices = 5; void OnTick() { for (size_t i = 0; i < number_of_prices; ++i) //the for loop function { Print(i); //this prints the loop } Print(number_of_prices - 1); // access last price }