C++ data types

See here for an introduction to the data types provided by C++.

Let's explore some data types. Consider this code - it initializes an 'unsigned short' to 0 and decrements it. Will it become negative, though it is unsigned?

unsigned short int i = 0;
i--;

Try it out and check the value of the variable after decrementing.

Consider that the variable i is used to index an array:
char name[] = "Helloo";
char c = name[i];

What would be the outcome of accessing the array in the second line?

Let us know your thoughts below. Next, we look at variables in C++ and their scope.


Comments

  1. Unknown4 May 2019 at 22:45

    As variable i has a large value greater than the size of name[] array, so accessing the ith index will throw a runtime error "SIGSEGV".

    ReplyDelete

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