ISO C states what the differences are. The int data type is signed and has a minimum range of at least -32767 through 32767 inclusive. The actual values are given in limits.h as INT_MIN and INT_MAX respectively. An unsigned int has a minimal range of 0 through 65535 inclusive with the actual maximum value being … Read more
The primary reason, you cannot do bitwise operation on a void *, but you can do the same on a intptr_t. On many occassion, where you need to perform bitwise operation on an address, you can use intptr_t. However, for bitwise operations, best approach is to use the unsigned counterpart, uintptr_t. As mentioned in the … Read more
Bit-fields are incredibly poorly defined by the standard. Given this code struct mystruct {int enabled:1;};, then we don’t know: How much space this occupies – if there are padding bits/bytes and where they are located in memory. Where the bit is located in memory. Not defined and also depends on endianess. Whether an int:n bitfield … Read more
As you are probably aware, ints are stored internally in binary. Typically an int contains 32 bits, but in some environments might contain 16 or 64 bits (or even a different number, usually but not necessarily a power of two). But for this example, let’s look at 4-bit integers. Tiny, but useful for illustration purposes. … Read more