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Results tagged with array
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user 7539
1
vote
Accepted
Why can't we declare an array dynamically?
Say you want an array of integers, you can do it like that:
printf("What is the length of the array? …
- 7,396
3
votes
Accepted
Why is this program behaving unexpectedly?
The problem is with your scanf and the fact that you are telling it it will read an int but you give it a char. ASCII values may be represented by integers, but scanf can distinguish them. It checks f …
- 7,396
1
vote
Accepted
2nd Week and 2nd Lecture: Dynamic array
What you want to say, is that the array is immutable, which means once you have declared their length, you can't change it to add more values. … Or when a new student arrives, but your array is full, you can create a new array, with a bigger length, copy all the values you have stored on the first array, and then add the new student. …
- 7,396
0
votes
pset2 vigenere shifting characters by the same
A good idea would be to create an array of ints, with the same length as the key, and populate it with the numeric representation of the key. …
- 7,396
1
vote
Accepted
How to iterate through an array using pointers
Yes you are correct. The compiler knows what data type you are using and traverses by the correct amount of bytes every time. You just tell it how many places away from zero you want (by the + i). You …
- 7,396
1
vote
Array in php vs R (pset7 sell.php)
Just like _POST your positions is an associative array. Just as you get $_POST["symbol"] you get $positions["price"].
If I understood correctly you want to do something like the following
<? …
- 7,396
1
vote
Accepted
pset7: why do we need [0] in from of list? (e.g. someData[0]['dic']?)
It's because when you run an SQL query with execute(), all the affected records in the database are returned to you, in an array of dictionaries. So you want the first dictionary in that list. … But if you gave for example a query that returns all users whose name starts with an S, you might want to use the whole array. Hope that helps. …
- 7,396