String Handling Functions

Strings in ANSI-C always are null-terminated character sequences. The ANSI library provides the following functions to manipulate such strings.

Listing: ANSI-C string manipulation functions



size_t strlen(const char *s);
char * strcpy(char *to, const char *from);

char * strncpy(char *to, const char *from, size_t size);

char * strcat(char *to, const char *from);

char * strncat(char *to, const char *from, size_t size);

int    strcmp(const char *p, const char *q);

int    strncmp(const char *p, const char *q, size_t size);

char * strchr(const char *s, int ch);

char * strrchr(const char *s, int ch);

char * strstr(const char *p, const char *q);

size_t strspn(const char *s, const char *set);

size_t strcspn(const char *s, const char *set);

char * strpbrk(const char *s, const char *set);

char * strtok(char *s, const char *delim);