Issue with "double" argument type
Hi all,
I'm just learning C, and I started playing around with the double argument type. So I wrote a simple print/scan/print program to see how it works. My code is below.
Code:
#include <stdio.h>
#include <stdlib.h>
int main()
{
double a;
printf("\nEnter number: ");
scanf("%lf", a);
printf("%f", a);
}
I wrote this code according to my textbook, along with instructions from my professor on how to read the variable and how to call the variable for a print statement. However, I get seemingly conflicting errors when trying to compile:
>double_explore.c:9: warning: format ‘%lf’ expects type ‘double *’, but argument 2 has type >‘double’
So, I edit the code so that the "double a" in my declarations becomes "double *a". Then, compiling again, I get this error:
>double_explore.c:11: warning: format ‘%f’ expects type ‘double’, but argument 2 has type >‘double *’
Any ideas?
Thanks.
-Sean
P.S. Not sure if it matters, but in case it does, I'm running Ubuntu 10.10 and using vim to edit the code.
