Differences

This shows you the differences between two versions of the page.

--- c-standard-library [February 20, 2026 at 02:32] – yanevskiv
+++ c-standard-library [August 22, 2026 at 15:22] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+# C standard library
+**[C standard library](https://en.cppreference.com/w/c/header)** is the core set of headers and functions always linked into C programs, providing essential utilities like I/O (`<stdio.h>`), memory management (`<stdlib.h>`), string handling (`<string.h>`), and math operations (`<math.h>`). Headers declare functions and constants; the library implementation lives in `libc.so` (dynamic) or `libc.a` (static).
+Modern C lacks advanced data structures (no maps, vectors, or trees), async/threading, and networking—you must implement these yourself or use external libraries.
+## Example
+This example demonstrates basic C standard library usage with I/O and memory allocation.
+```c
+// compile: gcc -o stdlib stdlib.c
+// run: ./stdlib
+// description: use standard library for I/O, memory, and string operations
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+int main() {
+    char *buffer = malloc(50);
+    if (!buffer) {
+        fprintf(stderr, "Memory allocation failed\n");
+        return EXIT_FAILURE;
+    }
+    strcpy(buffer, "Hello from stdlib");
+    printf("%s\n", buffer);
+    free(buffer);
+    return EXIT_SUCCESS;
+}
+```