Why Does `sizeof` Produce Different Results for String Literals, Pointers, and Character Arrays?

Size of String Literals

The given code demonstrates the usage of the sizeof operator on different types of string constants. The output reveals that the size of a string literal, sizeof("f"), is different from the size of a pointer to a string literal (sizeof(foo)), as well as the size of a character array (sizeof(bar)).

Why does sizeof calculate the length of a string literal?

The sizeof operator calculates the size of its operand in bytes. For a string literal, the operand is the corresponding character array representation, including the terminating null ('

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