char * & char []

[sarath_babu]

What is the difference between char *ptr="babu" char ptr[]="babu" babu

[Bob Stanneveld]

Nothing... The 2nd declaration is more readable through the program, as it is clear that you are using an array. Multiply it by infinity and take it beyond eternity and you'll still have no idea about what I'm talking about.

[rrrado]

char *ptr -> ptr is pointer to memory, where the string is stored, you can set it later to point to another string. char ptr[] -> array, you can only change string content ... i think shis will consume 4 bytes less memory than first definition :)

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rrrado

[rrrado]

There is a difference, check the disassembly

127: char aaa[] = "ssss";
004B423D mov eax,[string "ssss" (005fd498)]
004B4242 mov dword ptr [ebp-18h],eax
004B4245 mov cl,byte ptr [string "ssss"+4 (005fd49c)]
004B424B mov byte ptr [ebp-14h],cl
128: char *bbb = "bbb";
004B424E mov dword ptr [ebp-1Ch],offset string "bbb" (005fd46c)
129:
130: char *cc;
131:
132: cc = bbb;
004B4255 mov edx,dword ptr [ebp-1Ch] ; address of string is loaded from memory
004B4258 mov dword ptr [ebp-20h],edx
133: cc = aaa;
004B425B lea eax,[ebp-18h] ; cc just gets address
004B425E mov dword ptr [ebp-20h],eax

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rrrado