Standard library header - cppreference.com (original) (raw)

This header was originally in the C standard library as <string.h>.

This header is for C-style null-terminated byte strings.

[edit] Notes

• NULL is also defined in the following headers:
• std::size_t is also defined in the following headers:
  • (since C++17)

[edit] Synopsis

namespace std { using size_t = /* see description /; // freestanding   void memcpy(void* s1, const void* s2, size_t n); // freestanding void* memmove(void* s1, const void* s2, size_t n); // freestanding char* strcpy(char* s1, const char* s2); // freestanding char* strncpy(char* s1, const char* s2, size_t n); // freestanding char* strcat(char* s1, const char* s2); // freestanding char* strncat(char* s1, const char* s2, size_t n); // freestanding int memcmp(const void* s1, const void* s2, size_t n); // freestanding int strcmp(const char* s1, const char* s2); // freestanding int strcoll(const char* s1, const char* s2); int strncmp(const char* s1, const char* s2, size_t n); // freestanding size_t strxfrm(char* s1, const char* s2, size_t n); const void* memchr(const void* s, int c, size_t n); // freestanding void* memchr(void* s, int c, size_t n); // freestanding const char* strchr(const char* s, int c); // freestanding char* strchr(char* s, int c); // freestanding size_t strcspn(const char* s1, const char* s2); // freestanding const char* strpbrk(const char* s1, const char* s2); // freestanding char* strpbrk(char* s1, const char* s2); // freestanding const char* strrchr(const char* s, int c); // freestanding char* strrchr(char* s, int c); // freestanding size_t strspn(const char* s1, const char* s2); // freestanding const char* strstr(const char* s1, const char* s2); // freestanding char* strstr(char* s1, const char* s2); // freestanding char* strtok(char* s1, const char* s2); // freestanding void* memset(void* s, int c, size_t n); // freestanding char* strerror(int errnum); size_t strlen(const char* s); // freestanding }   #define NULL /* see description */ // freestanding