[taqihusain]

how to assign a null value to a string please tell me

[jimblumberg]

You need to show some code that shows what you have tried. Is this a C++ string or a C string?

Jim

[aresh]

What does null value mean? The string should be empty? Also, which string? std::string or C-string?

[jjl]

Null is usually used to simply terminate a string. Otherwise the standard string library functions have no idea where the end of the string ends.

i.e.

char arr[6] {'a', 'b', 'c', 'd', 'e', 'f'}; //no null terminator
printf("%s", arr); //printf will print all memory until a 0 is found in memory, very dangerous

arr[5] = '\0'; //replace 'f' with null terminator

printf("%s", arr); //prints abcde

This post has been edited by jjl: 19 November 2012 - 03:15 PM