id password check

Question

This problem is about checking id and password.

I think I did well on my code. But there was compile error.

could you help me with the code?

https://code.sololearn.com/czhX038QCpa6/#c

Answer 1

You did well, it's close to what you want. The exception here is that you tried to assign strings to a _char_ instead of a char pointer or a char array. You want ID and PW to be:

const char *ID = "galaxy storm";
const char *PW = "norara";

The other issue is with the variable 'I' and 'W' which are also just a single char.
I'd turn those into:

char I[32];
char W[32];

Using scanf() for strings is problematic so I'd recommend:

fgets(I, sizeof(I), stdin);
fgets(W, sizeof(W), stdin);

I'm guessing you already tried the above and the comparisons failed. The reason being that fgets() adds the newline character to the string so strcmp() will never return a match. To remove the newlines the easiest way is to type:

I[strlen(I)-1] = '\0'
W[strlen(W)-1] = '\0';

After that, it should work as expected.