Search results: things to know about c programming

void function * memmove (void * str1, const void * str2, size_t n) copy n characters from str2 to str1, but to solve the matching of memory blocks, memmove () is a safe approach

the function void * memset (void * str, int c, size_t n) copies the character c (an unsigned char) to the first n characters of the string pointed to by parameter str.

the char * strcat function (char * dest, const char * src) append the string pointed to by src, at the end of the string pointed to by dest.

char * strncat (char * dest, const char * src, size_t n) append (string), pointed to by src, at the end of the string pointed to by dest, with a length of up to n characters.

char * strchr function (const char * str, int c) looks for the first occurrence of the character c (an unsigned char) in the string pointed to by parameter str.

the function int strcmp (const char * str1, const char * str2) compares the string pointed to by sr1 with the string pointed to by srt2.

the function int strncmp (const char * str1, const char * str2, size_t n) compares the first n bytes of str1 and str2.

the function int strcoll (const char * str1, const char * str2) compares strings str1 and str2. the result depends on setting lc_collate.

char * strcpy function (char * dest, const char * src) copies the string pointed to by src to dest.

strncpy char * (char * dest, const char * src, size_t n) copies up to n copies to n characters from the string pointed to by src to dest. in case the length of the src is smaller

the function size_t strcspn (const char * str1, const char * str2) calculates the length of the character segment of string str1 without containing the characters in str2.

the function char * strerror (int errnum) searches for an internal array for errnum error numbers and returns a pointer to a string of error messages.

the function size_t strlen (const char * str) calculates the length of str string (not including the ending null character).

char * strpbrk (const char * str1, const char * str2) finds the first character in str1 string that connects any character specified in str2. (not including null ending

char * strrchr (const char * str, int c) looks for the last occurrence of the character c (an unsigned char) in the string pointed to by parameter str.

function void * memcpy (void * str1, const void * str2, size_t n) copies n characters from str2 to str1.

char * function strstr (const char * haystack, const char * needle) looks for the final occurrence of the whole needle string (not including the ending null character) that is