string operations in c

S.no
String functions
Description
1 strcat ( )  Concatenates str2 at the end of str1.
2 strncat ( )  appends a portion of string to another
3 strcpy ( )  Copies str2 into str1
4 strncpy ( )  copies given number of characters of one string to another
5 strlen ( )  gives the length of str1.
6 strcmp ( )  Returns 0 if str1 is same as str2. Returns <0 if strl < str2. Returns >0 if str1 > str2.
7 strcmpi_(.)  Same as strcmp() function. But, this function negotiates case.  “A” and “a” are treated as same.
8 strchr ( )  Returns pointer to first occurrence of char in str1.
9 strrchr ( )  last occurrence of given character in a string is found
10 strstr ( )  Returns pointer to first occurrence of str2 in str1.
11 strrstr ( )  Returns pointer to last occurrence of str2 in str1.
12 strdup ( )  duplicates the string
13 strlwr ( )  converts string to lowercase
14 strupr ( )  converts string to uppercase
15 strrev ( )  reverses the given string
16 strset ( )  sets all character in a string to given character
17 strnset ( )  It sets the portion of characters in a string to given character
18 strtok ( )  tokenizing given string using delimiter

 

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