scanf and int input problem

[Penage]

Been trying to figure out this for an hour with no luck. Learned other things along the way, but not an answer to this problem.

I've a simple program to use scanf ... enter a number, print a number.

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[]) {

	int a;
	
	printf ("Enter a number: ");
	scanf ("%d", &a);
	printf ("Number is %d\n", a);
	 
    return 0;
}

When I run it, I type in a number and then press Enter. System just sits there, not moving on to the printf command. The only way I could get it to work was to type a number and then actually type in \n before pressing Enter (e.g. 456\n). Then the program would proceed.

But when I changed my input type to a char, things worked fine with a simple Enter after a char.

Please help me understand what I'm missing here. Thanks.

Jim

[tabstop]

I don't think I know what Foundation/Foundation.h is, so I can't help there. If you use the real
#include <stdio.h>
instead, what happens?

[Penage]

Foundation/Foundation.h seems to be the superset, including stdio.h, that xcode seems to use. But I tried including stdio.h with the same result.

[Memloop]

Are you compiling it as Objective-C? Simply naming your file .m instead of .c should invoke the correct GCC module. Your example works for me by the way when I compile it as Objective-C.

[tabstop]

On a Mac, using #include <stdio.h> and using gcc from the command line, everything works perfectly. If I put your code in a Cocoa project, I get 3951 errors, but that's probably me not putting it into Cocoa correctly (since I don't really use it at all -- all the errors are from trying to compile ObjC as real C). So how are you trying to build this project?

EDIT: Changing your file to a .m and compiling it from the command line with gcc also gives no errors (and no requirement for typing \n). So I'm thinking it definitely is something in xcode....

[hjohni]

Thanks for the suggestion