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by topkekz
3463 days ago
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>Accessing an element of an array via ptr[3] is actually just short for (ptr + 3). This can be equivalently written as (3 + ptr) and therefore as 3[ptr], which turns out to be completely valid code. C++ standard defines the syntax of a postfix expression as this postfix-expression:
primary-expression
postfix-expression[expression]
postfix-expression[braced-init-list]
[expression]primary-expression is not valid |
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