Checking of values within Array in c

Question

How can I search an array to find out whether it contains a set of values within the specific range of elements in the array (may be from position 2 to position 7, the first elements would be start of frame, length etc )

if input_data[1:5] == (45, 35, 230, 28)

if contains 45 
    send sensor 1 data;
if contains 35
    send sensor 2 data;
if contains 230 
    send sensor 3 data;
if contains 28
    send sensor 4 data;

It may contain any combinations (order) of the above values or doesn't contain any one of the elements and should stop sending data if the associated element is not found

I am trying to send some requested data based on the received elements

Updated !!

The data is received only once(only when updated), according to the Received data i need to send the requested outgoing data in the background,

if input_data[1:5] == (45, 35, 230, 28)
if contains 45 
    send_Sensordata1 = 1

if contains 28
    send_Sensordata4 = 1

in other function (running in background)

if send_Sensordata1 ==1 
   do something here(main sending stuff goes here)
if send_Sensordata4 ==1 
   do something here (main sending stuff goes here)

so in the first incoming data i get all the elements, then the requested data is sent, but if an element is missing in the next incoming data i need to stop sending outgoing data for that particular request (like toggle)

...but if an element is missing in the next incoming data.... Does the array itself gets updated when the next incoming data arrives? — Haris
– Haris, Commented Dec 17, 2015 at 5:43
@ Haris .. yes it gets updated, so if i get the incoming data as (45,35,230,28) it wants all the data from all the sensors. Similarly when new incomming data is (45,230) i need to send outgoing data only to those requests and stop the remaining — user2345
– user2345, Commented Dec 17, 2015 at 5:50
Then the code I posted will work, the only thing missing is that you want it to be done in the background. Can you explain a little more about that, do you want it to be done in parallel? — Haris
– Haris, Commented Dec 17, 2015 at 6:05
How do your array looping code and the code which will send data in the background communicate? Do they run in different threads or processes? — Jay
– Jay, Commented Dec 17, 2015 at 6:30

shresha · Accepted Answer · 2015-12-17 04:14:14Z

3

You have to loop over the array and look for the those particular elements every time.

for(i=2; i<7; i++)
{
    if(array[i] == 45) 
        send sensor 1 data;
    else if(array[i] == 35)
        send sensor 2 data;
    else if(array[i] == 230) 
        send sensor 3 data;
    else if(array[i] == 28)
        send sensor 4 data;
}

edited Dec 17, 2015 at 4:14

shresha

14710 bronze badges

answered Dec 17, 2015 at 4:09

Haris

12.3k6 gold badges48 silver badges75 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user2345 Over a year ago

@ Haris , i was able to run it, but got into other issue, have a look at the updated question

Grv · Accepted Answer · 2015-12-17 04:39:08Z

0

The array loop will start from 1 to get element 2 as in c array start from 0.

for(i=1; i<7; i++)
{
    if(array[i] == 45) 
        send sensor 1 data;
    else if(array[i] == 35)
        send sensor 2 data;
    else if(array[i] == 230) 
        send sensor 3 data;
    else if(array[i] == 28)
        send sensor 4 data;
}

answered Dec 17, 2015 at 4:39

Grv

3833 silver badges15 bronze badges

Collectives™ on Stack Overflow

Checking of values within Array in c

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related