Swetha,
'\' in C is used to denote a escape sequence in C strings (and also in many
other languages).
e.g '\n' is for New Line '\n' is counted as one character.
Now '\ooo' is for an ASCII in octal representation.
here is the list of all escape sequences:
http://msdn.microsoft.com/en-us/library/h21280bw(v=vs.80).aspx
So for your string : "\12345s\n"
here '\123' is an ASCII in octal, hence one character.
rest you know about the characters: so length = '\123'(1) + 3 + '\n'(1) = 5.
I suggest you try with other combinations with '\' and print the output.
They will definitely show some weird stuffs :)
Hope that helps.
On 25 July 2011 22:53, swetha rahul <swetharahu...@gmail.com> wrote:
> char *s="\12345s\n";
> printf("\n %d",strlen(s));
>
> The output is 5...?? But how.??
>
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