【转】老外学习C语言套路

Learning C

If you don't know C and plan to use it for osdeving, it might be profitable to begin with some C language exercises. A good start (you still need to find tutorials, these are just exercises):

• program that writes a string, asks for your name, writes two line breaks and writes another string and the provided name;
• implement strcopy(), strncopy(), strncmp() and other string manipulation functions. What is a buffer overflow?
• implement memmove() or memcpy(). Can you do it with inline assembly so it be faster?
• use inline assembly to perform CPUID and interpret the results;
• use typedefs to name uint32 for a 32-bit unsigned integer type; what type is signed 16-bit?
• use structs and pointers to implement a singly linked lists.
• divide the program with singly linked lists to main.c, list.c and list.h. What is a header guard?
• learn about inline, static, volatile; ternary operator; casts;
• use C preprocessor to write MAX, MIN macros; to print out the current function name, line number;
• use C preprocessor to write a log function which takes a level for the first argument, and uses printf() on the rest of the arguments if the level is higher or equal to current logging threshold.