C

data types int float char void sizes sizeof operator +48 more

arithmetic division modulo integer division logical operators short circuit and or +32 more

if else conditional branching switch case fall through break for +28 more

function declaration function definition prototype pass by value pass by reference function arguments pointers declaration +39 more

array declaration initialization 1D array 2D array row major memory layout array decay +46 more

pointer declaration initialization address NULL null pointer safety pointer arithmetic +40 more

define macro preprocessor object like function like include header angle brackets +34 more

double pointer pointer to pointer indirection function pointer declaration typedef callback design pattern +39 more

malloc heap allocation casting stdlib calloc zero initialization comparison realloc +49 more

struct initialization designated initializer c99 nested struct composition struct pointer arrow operator +47 more

fopen file modes read write binary fclose resource cleanup buffering file descriptor +40 more

linked list struct self referential insertion head tail deletion free +28 more

stack array LIFO linked list dynamic operations abstract data type infix +44 more

sorting bubble sort optimization selection sort insertion sort adaptive merge sort divide and conquer +33 more

bitwise operators AND OR XOR NOT shift set bit +38 more

open system call file descriptors flags stdin stdout stderr close +48 more

stat fstat lstat struct stat file metadata permissions setuid setgid +38 more

fork process creation pid copy on write COW virtual memory exec execv +57 more

signal unreliable signals handler sigaction reliable signals sa_mask SA_RESTART SIGINT +47 more

pipe anonymous pipe ipc dup2 pipeline fork exec popen pclose +45 more

pthread_create thread creation pthreads pthread_join pthread_detach joinable detached thread vs process +43 more

socket AF_INET SOCK_STREAM SOCK_DGRAM system call tcp server bind +61 more

virtual memory page table TLB MMU paging memory layout text data +54 more

volatile hardware register ISR compiler optimization embedded memory mapped io hardware registers pointers +33 more

c89 c99 c11 c17 standards history designated initializers VLA +32 more