splitting a string

[smegly]

Hi,

I need to split the input i receive from my file into two parts.

File looks like this

customerNo <space> typeofrequest

eg

1122 deposit

how do i get the customer number as one string and the request in another?.

I can do it in Java, but because c doesnt have checks like variablename.equals();

i'm at a loss..

Thanks.

[ventolin]

look up strtok()

if you cant find it...

http://www.mkssoftware.com/docs/man3/strtok.3.asp

[quzah]

It's easier than strtok. Read the entire string using something like fgets, and then simply sscanf the buffer into two variables.

Quzah.

[Prelude]

>I can do it in Java, but because c doesnt have checks like variablename.equals();
C has a standard library just like Java. In <string.h> there's a function called strcmp that performs the equivalent operation as x.equals(y);. But because there isn't a native substring function, you would be better off using quzah's suggestion.

[loopy]

Heres my version:

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

int main()
{
	char buff[1024], result[1024], result1[1024];
	FILE *file;
	if ((file = fopen("/Source/file.txt", "r")) == NULL) {
		fprintf(stderr, "fopen: Failed.\n");
		exit(1);
	}
	if (fgets(buff, sizeof(buff), file) == NULL) {
		fprintf(stderr, "fgets: Failed.\n");
		exit(1);
	}
	sscanf(buff, "%s %s", &result, &result1);
	fprintf(stdout, "Customer #: %s\nType: %s\n", result, result1);
	if (fclose(file) == EOF) {
		fprintf(stderr, "flcose: Failed.\n");
		exit(1);
	}
	return 0;

I wonder, 'sscanf()' suffers the same problems as 'scanf()'?

[Prelude]

>I wonder, 'sscanf()' suffers the same problems as 'scanf()'?
sscanf behaves the same way as scanf, yes. The biggest problem with scanf is that it works directly with stdin and doesn't mix well with other input functions. The second biggest problem with scanf is that it's very difficult to recover from effectively if an error occurs. sscanf solves the first problem because the "stream" is actually a string acquired elsehow. The second problem is solved by having the "stream" in memory. A string in memory is much easier to work with than an input stream when it comes to error handling.

[loopy]

>I wonder, 'sscanf()' suffers the same problems as 'scanf()'?
sscanf behaves the same way as scanf, yes. The biggest problem with scanf is that it works directly with stdin and doesn't mix well with other input functions. The second biggest problem with scanf is that it's very difficult to recover from effectively if an error occurs. sscanf solves the first problem because the "stream" is actually a string acquired elsehow. The second problem is solved by having the "stream" in memory. A string in memory is much easier to work with than an input stream when it comes to error handling.

Ahhh, I see. We just have to hope the programmer can handle their OWN, input. ; )

Thanks....