Basic C Programming Question - Can anyone help?

007bond · 12:16 PM

This is part of my code:

Code:

int main(){

	char str[100];
	char min[100];
	char max[100];
	int count;
	int num = 0;
	
	scanf("%i", count);

On the line with "scanf", I get the error " warning: format ‘%i’ expects argument of type ‘int *’, but argument 2 has type ‘int’ [-Wformat]" (I'm using a unix-based compiler, if that helps).

I'm reading in data from a file with this data:

Code:

7
jones
smith
aki
ren
stimpy
bart
Simpson

lee1210 · Feb 6, 2013, 10:25 AM

You need to give scanf the address of an int so scanf can set its value. Pass &count rather than count.

-Lee

007bond · Feb 6, 2013, 11:29 AM

Quote:

Originally Posted by lee1210

You need to give scanf the address of an int so scanf can set its value. Pass &count rather than count.

-Lee

Wow...I feel really stupid right now. Thanks for the help!

LPZ · Feb 6, 2013, 12:15 PM

Quote:

Originally Posted by 007bond

Wow...I feel really stupid right now. Thanks for the help!

Well, the error message was pretty spot-on.

"warning: format ‘%i’ expects argument of type ‘int *’, but argument 2 has type ‘int’ [-Wformat]"

Feb 6, 2013, 09:47 AM	#1
007bond macrumors 6502a Join Date: Dec 2008 Location: DFW, Texas	Basic C Programming Question - Can anyone help? This is part of my code: Code: int main(){ char str[100]; char min[100]; char max[100]; int count; int num = 0; scanf("%i", count); On the line with "scanf", I get the error " warning: format ‘%i’ expects argument of type ‘int ’, but argument 2 has type ‘int’ [-Wformat]" (I'm using a unix-based compiler, if that helps). I'm reading in data from a file with this data: Code: 7 jones smith aki ren stimpy bart Simpson __________________ New: Nexus 4 16GB iPhone 5 16GB Black & Slate; iMac 27" 2009; Canon Digital Rebel XT(Silver)!; 2012 MacBook Air 13" 1.8GHz Core i5 w/ 4GB RAM, 128GB SSD Last edited by balamw; Feb 6, 2013 at 12:16 PM. Reason: QUOTE->CODE*
	0

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Feb 6, 2013, 10:25 AM	#2
lee1210 macrumors 68040 Join Date: Jan 2005 Location: Seattle, WA	You need to give scanf the address of an int so scanf can set its value. Pass &count rather than count. -Lee
	0


MacRumors Forums > Apple Systems and Services > Programming > Mac Programming