CODEWITHSUNDEEP
c++listfor-loopappend
Vitesze
Vitesze

Reputation: 23

C++ - Adding numbers to a list? (like Python)

I'm very new to programming, but am trying to learn both Python and C++ (One is work-related, other one is more of a spare-time thing). I use the following code in C++ to take measurements with a parking sensor:

> for (i=0; i<20; i++) {
>     digitalWrite(TRIG1, LOW);
>     delay(2);
>     digitalWrite(TRIG1, HIGH);
>     delay(10);
>     digitalWrite(TRIG1, LOW);
>     d = pulseIn(ECHO1, HIGH);
>     d = d/58;
>     delay(13);
>     }

This should measure the distance and store it in d. It will do this 20 times in a timespan of 500ms. I now want to store each of these 20 measurements and obtain the median value from it.

In Python, I can create a list, and then append numbers to it. Is there any such equivalent in C++? If not, what other method would be recommended to take a median value, without writing terribly long code?

Upvotes: 0

Views: 1942

Answers (1)

Andreas H.
Andreas H.

Reputation: 1811

If you have to go with plain C(++) use an array of integer values:

int d[20];

for(int i = 0; i < 20; ++i)
  d[i] = measureValue();

If the STL (Standard Template Library) is available, use a std::vector:

#include <vector>

std::vector<int> d;

for(int i = 0; i < 20; ++i)
  d.push_back(measureValue());

If you are writing for an arduino, you may want to install Standard C++ for Arduino (see https://github.com/maniacbug/StandardCplusplus/blob/master/README.md)

Upvotes: 1

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