The strdup() function allocates sufficient memory for a copy of the string s, does the copy, and This function returns a pointer to a null-terminated byte string. The pointer may subsequently be used as an argument to the function free.
If an error occurs, a null pointer is returned and errno may be set.
char * strdup(const char *str1);
Duplicated string is : Prayag
| Functions | Description |
|---|---|
| strcat( ) | The strcat() function is used to concatenate one string(source) at the end of another string(destination). |
| strncat( ) | Appends first n characters of a string at the end of another. |
| strcpy( ) | Copies from str2 into str1 |
| strncpy( ) | Copies given number of characters of one string to another |
| strlen( ) | Gives the length of str1 |
| strcmp( ) | Returns 0 if str1 is same as str2. Returns <0 if strl < str2. Returns >0 if str1 > str2 |
| strcmpi( ) | Same as strcmp() function. But, this function negotiates case. “A” and “a” are treated as same. |
| strchr( ) | Returns pointer to first occurrence of char in str1 |
| strrchr( ) | last occurrence of given character in a string is found. |
| strstr( ) | Returns pointer to first occurrence of str2 in str1 |
| strrstr( ) | Returns pointer to last occurrence of str2 in str1 |
| strdup( ) | Duplicates the string |
| strlwr( ) | Converts string to lowercase |
| strupr( ) | Converts string to uppercase |
| strrev( ) | Reverses the given string |
| strset( ) | Sets all character in a string to given character |
| strnset( ) | It sets the portion of characters in a string to given character |
| strtok( ) | Tokenizing given string using delimiter |