noob help

[inabox]

I'm new to C, but have been programming a couple of years. I've been getting some curious errors with this code and I just don't understand what's wrong.

Here are the errors:
seek_word.c:10:30: missing terminating " character
seek_word.c: In function `main':
seek_word.c:11: warning: comparison between pointer and integer
seek_word.c:11: error: parse error before "word"
seek_word.c: At top level:
seek_word.c:16: error: parse error before string constant
seek_word.c:16: warning: conflicting types for built-in function `printf'
seek_word.c:16: warning: data definition has no type or storage class

Here's the code:
#include <stdio.h>

int main() {
char * input;
char * word;
char * sentence;
printf(">> ");
scanf("%s", input);
int i;
for(i=0,word!="\n"",i++) {
word = input;
}
for(i,word!="\n",i++) {
sentence = input;
}
printf("word: %s.\nsentence: %s\n", *word, *sentence);
}

I'd really appreciate if someone could help me out.

Thanks,
inabox

 

[xwb]

In C, all the declarations have to be before the code. Your int i should be before the printf. Also, your for loop is wrong. It should read

        for(i=0;word[i]!='\n';i++) {
                word[i] = input[i];
        }
        for(i;word[i]!='\n';i++) {
                sentence[i] = input[i];
        }

Also you have to allocate the space for input, word and sentence before using it.

 

[inabox]

Great thanks.
One more thing. If I used scanf("%s", this_is_a_string) what would the last character of this_is_a_string be? '\0'?

 

[xiejie]

the format of scanf should be scanf("%s",&var),so it's wrong , i think ,

 

[inabox]

It's a pointer (an array of characters) so the & isn't necessary.

 

[xiejie]

the '\0' will be added to the end of the string of cause,if not there will be an error when printf is used to print the string on the screen.

 

[ArkM]

Well, you have much more serious problems in your code. At first, there are a lots of syntax errors in the snipped (for example, double quotes in "\n""). But the most problem:

char* input;
...
scanf("%s", input);

Oops, you have uninitialized pointer (referenced to nowhere then try to scan user input and place it via that pointer to nowhere (then have a memory crash and erratical program behaviour.

Declare true input buffer (char array): char input[128], for example.

And don't forget: %s format specificator stops the input at 1st whitespace (not at end of line). So with input string It's me, God!" you will get It's only...