Dec 12, 2020 · Make a pointer to short and use that: short *q = (short *) (p+2); *q = 2020;. Copy into the bytes using memcpy: short year = 2020; memcpy (p+2, year, sizeof year);.

May 13, 2025 · A pointer is a variable that stores the memory address of another variable. Instead of holding a direct value, it has the address where the value is stored in memory. This allows …

The data type that a pointer points to informs the compiler on how many bytes to increment a pointer's address when using pointer arithmetic and how to work with pointers in situations …

Simply that C is somewhat picky about assigning a pointer of one type to a pointer of another type, and the typecast formalizes the logic so that the compiler will accept it. If you …

Mar 15, 2018 · We’ll use void pointers and a width (number of bytes the type occupies) to make a generic swap function. char *v1 = (char *)a; char *v2 = (char *)b; char tmp; size_t i; for (i=0; …

Mar 23, 2016 · In C99, you have the stdint.h header, which contains int8_t and uint8_t types, which are guaranteed to be 8 bits (and generally are just typedefs for char). Beyond this, there …

Jul 27, 2021 · Once a pointer points to a variable, you can use that pointer to modify the value of the variable. Recall that the variable is just an alias for an array of bytes in memory; a pointer...

Jan 24, 2025 · Step 1: Initialize the integer values and point these integer values to the pointer. Step 2: Now, check the condition by using comparison or relational operators on pointer …

Mar 10, 2024 · As we know that a pointer contains the address of another variable and by dereferencing the pointer (using asterisk (*) operator), we can access the value to that variable …

To manipulate a bit within a byte, word, or long word, you employ the C language’s bitwise operators: & (and), | (or), ^ ( exclusive or), ~ (one’s compliment), and ! (not).