There are many important string functions defined in "string.h" library.
| No. | Function | Description |
|---|---|---|
| 1) | strlen(string_name) | returns the length of string name. |
| 2) | strcpy(destination, source) | copies the contents of source string to destination string. |
| 3) | strcat(first_string, second_string) | concats or joins first string with second string. The result of the string is stored in first string. |
| 4) | strcmp(first_string, second_string) | compares the first string with second string. If both strings are same, it returns 0. |
| 5) | strrev(string) | returns reverse string. |
| 6) | strlwr(string) | returns string characters in lowercase. |
| 7) | strupr(string) | returns string characters in uppercase. |
