Thread: Using strtok and sscanf

I am trying to split an array up into tokens, an array that is input by the user, and from those tokens extract numbers only. Here is my code so far, but I am having some problems. It prints out the numbers but also some other stuff... Here is the code and the output.

#include <stdio.h>
#include <stdlib.h>

int main() {

char delimiters[] = " \t\n\r";
char storage[100];
char copy[100];
int* p;
int n=0, numbers;

for( n=0; storage[n] != EOF; n++ ) {
fgets( storage, sizeof(storage), stdin );
strcpy(copy, storage);
p = strtok(copy, delimiters);
while (p) {
sscanf(p, "%d", &numbers);
printf("%d\t", numbers);
p = strtok(NULL, delimiters);
}
printf("\n");
}
}

Output:

% gcc -o test test.c
test.c: In function `main':
test.c:15: warning: assignment makes pointer from integer without a cast
test.c:17: warning: passing arg 1 of `sscanf' from incompatible pointer type
test.c:19: warning: assignment makes pointer from integer without a cast
% test
hey 3are some 23 numbers
3 3 3 23 23

Ive been over this for the past few days and cant seem to get anywhere, nor can i find anything in my books. Thanks for your time and help in advance!

i did that but i still get the same problems. Whats happening is this...

% test
what 45 2k
2 45 2

Why is my program printing a 2 for the first token when there is no numbers in it? Here is my code again fixed up:

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main() {
	
	char delimiters[] = " \t\n\r";
	char storage[100];
	char copy[100];
	char* p;
	int n=0, x;
	double numbers;

	for( n=0; storage[n] != NULL; n++ ) {
		fgets( storage, sizeof(storage), stdin );
		strcpy(copy, storage);
		p = strtok(copy, delimiters);
		while (p) {
			x = sscanf(p, "%lf", &numbers);
			printf("%f\t", numbers);
			p = strtok(NULL, delimiters);
		}
		printf("\n");
	}
}

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Finally I got it working. Thanks everyone for their help. I took out that loop, well for the moment, and Ill look it over. Thanks again!