Cannot compare pointers to strings?

AI Thread Summary
The discussion centers on a code compilation error in GCC related to comparing a pointer to a string, which violates ISO C++ standards. The user initially misunderstands the issue, believing there are no pointers involved. The confusion arises from the use of string literals, where the code attempts to compare an element of an unsigned char array to a string literal. The correct comparison should involve a character, specifically using single quotes for a character (' ') instead of double quotes for a string (" "). This highlights the importance of understanding data types and proper syntax in C++.
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After compiling the code below, GCC says that you can't compare a pointer to string by iso C++ standards.

But I don't see a pointer anywhere (I don't know pointers for now...did it long ago, now forgot)...may be it has to do with the fact that arrays are called by reference.

Code:
char convert(unsigned char input[]);
main()
{
	unsigned char input[1000];
	convert(input);
}
char convert (unsigned char input[])
{
	int i;
	if(input[0] == " ");
}
 
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dE_logics said:
Code:
if(input[0] == " ");
input[0] has type unsigned char&.
" " has type const char*.

You meant ' ' which has type char.
 
Oh...damn...I meant single quotes. :P
 
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