atof() |
converts a string to a double |
atoi() |
converts a string to an integer |
atol() |
converts a string to a long |
isalnum() |
true if alphanumeric |
isalpha() |
true if alphabetic |
iscntrl() |
true if control character |
isdigit() |
true if digit |
isgraph() |
true if a graphical character |
islower() |
true if lowercase |
isprint() |
true if a printing character |
ispunct() |
true if punctuation |
isspace() |
true if space |
isupper() |
true if uppercase character |
isxdigit() |
true if a hexidecimal character |
memchr() |
searches an array for the first occurance of a character |
memcmp() |
compares two buffers |
memcpy() |
copies one buffer to another |
memmove() |
moves one buffer to another |
memset() |
fills a buffer with a character |
strcat() |
concatenates two strings |
strchr() |
finds the first occurance of a character in a string |
strcmp() |
compares two strings |
strcoll() |
compares two strings in accordance to the current locale |
strcpy() |
copies one string to another |
strcspn() |
searches one string for any characters in another |
strerror() |
returns a text version of a given error code |
strlen() |
returns the length of a given string |
strncat() |
concatenates a certain amount of characters of two strings |
strncmp() |
compares a certain amount of characters of two strings |
strncpy() |
copies a certain amount of characters from one string to another |
strpbrk() |
finds the first location of any character in one string, in another string |
strrchr() |
finds the last occurance of a character in a string |
strspn() |
returns the length of a substring of characters of a string |
strstr() |
finds the first occurance of a substring of characters |
strtod() |
converts a string to a double |
strtok() |
finds the next token in a string |
strtol() |
converts a string to a long |
strtoul() |
converts a string to an unsigned long |
strxfrm() |
converts a substring so that it can be used by string comparison functions |
tolower() |
converts a character to lowercase |
toupper() |
converts a character to uppercase |