What is C-string?

 What is C-string? Explain with an example.

- C-string is null terminated string which is simply a null terminated character array. C-string is essentially C style string. It is different than the way C++ handles strings-by providing string class.

- Its general form of declaration is :

char var_name[size]; var_name is name given to the array variable.

- Please note while declaring a C-string, we need to declare it to be one character longer that the largest string that it is to hold. For example, to declare a C-string str that can hold 10 characters, we need to write :

char str[11];

- One extra location is reserved to store the null char at the end of the string.

- Some of the most commonly used C-string functions are :

strlen(s1) returns length of s1 strcpy(s1, s2) copies s2 into s1 strcmp(s1,s2) returns 0 if s1 & s2 are same, less than 0 if s1 < s2, greater than 0 if s1 > s2.