CS208 Introduction to Computer Systems
Wednesday, 8 October 2025

+ Questions (class-related or not...)

+ What output does this produce?

    int x = 0x00434241;
    char *p = (char *)(&x); // &x is the address of x; but now it's a char *?
    printf("%x\n", x);
    printf("%s\n", p);

----
    char *p = "asdf";
    int *k = NULL;   
    k = (int *)p;
        // p is 8 bytes, k is 8 bytes, so this assignment just copies 64 bits

---
    when is malloc needed?

+ Forgot to mention...
- Why has the super-weird UTF-8 taken over the world?

+ Misc fun with bits
- base64
- Color
- BMP file format
- Steganography
-