C standard string functions

 

Include: <string.h> Syntax: char *strcpy( char *dest, char *srce ); Returns: the destination string. Description: copies from srce to dest until a NULL terminator is found

Include: <string.h> Syntax: char *strchr( char *string, char c ); Returns: a pointer to the 1st occurrence of character c in string. If not successful then it returns NULL . Description: searches for char c in NULL terminated string

Include: <string.h> Syntax: int strcmp( char *string1, char *string2 ); Returns: a negative value if is less than , 0 if is equal to , or a positive value if is greater than . Description: The strcmp function compares and and returns a value indicating their relationship, as follows: Value Meaning < 0 is less than = 0 is identical to > 0 is greater than The strcmp function operates on null-terminated strings. The arguments to this function are expected to contain a null character (\0) marking the end of the string.

Include: <string.h> Syntax: char *strlwr( char *string ); char *strupr( char *string ); Returns: a pointer to the converted string. Description: The strlwr function converts any uppercase letters in the given null-terminated string to lowercase. The strupr function converts any lowercase letters to uppercase. Other characters are not affected.

Include: <string.h> Syntax: char *strcat( char *string1, char *string2 ); Returns: a pointer to the concatenated string. Description: The strcat function operates on null-terminated strings.

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