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iOS Objective-C Basics (Retired) Fundamentals of C Array

Posted by Iosif Skorohodov
Iosif Skorohodov
1,126 Points

Why do you have to use square brackets?

Do floating numbers have to be in square brackets?

1 Answer

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

using square brackets when working with arrays is just a part of the syntax. this style is common in many programming languages

in the code below, I declare an array of floats with a size of 3. the number that goes between the brackets is the length of the array, or the number of items it can hold:

float numbers_geeks_love[3];

I can then index that array using the arrays name followed by square brackets with the index of the array inside to add values to that array. indexes start at 0, so if I wanted to add a number to the first spot in the array I would use index 0, the second spot would be index 1, etc etc. 

numbers_geeks_love[0] = 3.1415;
numbers_geeks_love[1] = 1.6180;