Enumerated Types in Programming

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What does the 'typedef' keyword allow us to do in C?

Create a new type from scratch

Define a function

Declare a variable

Create a new name for an existing type (correct)

What is the significance of '&' in C when used with variables?

Evaluates the size of a variable

Returns the address of a variable (correct)

Updates the value of a variable

Evaluates the value of a variable

When declaring a pointer variable in C, what does the '*' symbol indicate?

It represents the size of the data it points to

It indicates the end of the line

It declares an array

It denotes that the variable is a pointer (correct)

What does dereferencing a pointer mean in C?

Accessing the value stored at the memory location pointed to Signup and view all the answers

What does 'typedef double vector;' create in C?

A new type named 'vector' Signup and view all the answers

What happens when you assign the address of one pointer variable to another pointer variable in C?

Both pointers point to the same location Signup and view all the answers

What primary purpose do types serve in C's type system?

To assist the compiler in generating code Signup and view all the answers

In C, what happens when dividing an integer variable by a decimal value?

The result is promoted to a float Signup and view all the answers

Which of the following is true about automatic type conversion in C?

It promotes the result of integer division to a float Signup and view all the answers

What happens when assigning a character to an integer variable in C?

The character is implicitly converted to its ASCII value Signup and view all the answers

When working with pointers in C, what is essential to consider?

Pointers must be dereferenced before use Signup and view all the answers

What is the purpose of using enums in C?

To provide hints to readers of the code Signup and view all the answers

How are arrays indexed in C?

Not bounds checked Signup and view all the answers

What is the purpose of a terminator in C strings?

Signal the end of a string Signup and view all the answers

How are structs used in C?

To bundle values of different types together Signup and view all the answers

In C, how can we access fields within a struct?

Through pointers or field names Signup and view all the answers

What is one consequence of not using terminators for strings in C?

Strings lose their length information Signup and view all the answers

Why should we avoid passing structs to functions or returning them directly?

Structs may lose information during function calls Signup and view all the answers

What does an enum represent in C?

A predefined set of named constants Signup and view all the answers

How does C represent strings?

"char" arrays terminated by a specific character Signup and view all the answers

"int is_northwest(struct point p) { return (p.x > 0 && p.y > 0); }": What does this function check?

"if both coordinates of point p are positive" Signup and view all the answers