C Methods Reference

Returns the length of a null-terminated string.

Copies a string from source to destination.

Copies at most n characters from source to destination.

Appends source string to destination.

Compares two strings lexicographically.

Compares at most n characters of two strings.

Finds first occurrence of a character in a string.

Finds last occurrence of a character in a string.

Finds first occurrence of substring.

Tokenizes a string using delimiter characters.

Copies n bytes from source to destination.

Copies n bytes, handles overlapping regions safely.

Fills n bytes of memory with a value.

Compares n bytes of two memory regions.

Allocates size bytes of uninitialized memory.

Allocates memory for an array and initializes to zero.

Resizes a previously allocated memory block.

Deallocates memory previously allocated.

Converts string to integer.

Converts string to long with error detection.

Sorts an array using quicksort.

Binary search in a sorted array.

Returns absolute value of integer.

Returns a pseudo-random integer.

Seeds the random number generator.

Prints formatted output to stdout.

Prints formatted output to a string buffer.

Reads formatted input from stdin.

Reads a line from a stream into a buffer.