C

• Keywords
• Operators
• Regle De Codage
• Macro

Werror overwrite make CFLAGS=-Wno-error

Include path (print)

gcc -xc -E -v -
gcc -xc++ -E -v -

Macro

• #define dbgprint(X,...) printf(X, ##__VA_ARGS__) : variadic argument macro

• # operator is called the stringifier

• __declspec(dllexport) # windows : export function in dll

• __debugbreak() # Set breakpoint

• offsetof(struct_t, elt_t) # Get elemenet offset

• extern int const iPi = 3.1415926535

  • extern so importing this.h get iPi defined
  • const for the precompiler (to avoid errors)

• #pragma pack(1) # to let the structure without aligning each field

• __FILE__ # Name of the file.c

• __LINE__ # Current line

• __FUNCTION__ # Name of current function

• Jump to arbitrary addr

  void (*foo)(void) = 0xcacacaca; foo();

Notes

• Le tableau aloue de la mémoire et le pointeur non => préféré le tableau

#include <time.h>
srand(time(NULL));
# Set seed
rand();
# Get Random

int __usercall fct1@<eax>(int p1@<ecx>, int p2@<edx>, int p3) {return p1 + p2 + p3;}