string.h

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#define size_t size_t



#define NULL    (0)



void *memchr(const void *s, int c, size_t n);



int memcmp(const void *s1, const void *s2, size_t n);



void *memcpy(void *dst, const void *src, size_t n);



void *memmove(void *s1, const void *s2, size_t n);



void *memset(void *s, int c, size_t n);



char *strcat(char *s1, const char *s2);



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



int strcmp(const char *s1, const char *s2);



int strcoll(const char *s1, const char *s2);



char *strcpy(char *s1, const char *s2);



size_t strcspn(const char *s1, const char *s2);



char *strerror(int errcode);



size_t strlen(const char *s);



char *strncat(char *s1, const char *s2, size_t n);



int strncmp(const char *s1, const char *s2, size_t n);



char *strncpy(char *s1, const char *s2, size_t n);



char *strpbrk(const char *s1, const char *s2);



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



size_t strspn(const char *s1, const char *s2);



char *strstr(const char *s1, const char *s2);



char *strtok(char *s1, const char *s2);



size_t strxfrm(char *s1, const char *s2, size_t n);