I've confused myself and forgot how to do this.

I want to take a floating input, multiply it by 100, and then change it to an integer without rounding.

ie:  650.127  = 65012
     23.3     = 2330
     45.01    = 4501

#include < stdio.h >                              

void main()
{
 double input;
 scanf("%e", &input);

 printf("%e\n", input);
 int g=(input*100);
 printf("new input is %d\n", g);
 if(input<=0)
 printf("No input");
}

1.057003e-307
new input is 0

#include < stdio.h >                              

void main()
{
 double input;
 input = 650.23;

 printf("%e\n", input);
 int g=(input*100);
 printf("new input is %d\n", g);
 if(input<=0)
 printf("No input");
}

3/16/2011 11:49:59 AM

[EDIT]


I changed the following because I realize I was using exponential form and I meant not to.

scanf("%f", &input);
printf("%f\n", input);

3/16/2011 12:20:41 PM

Figured it out (after scratching my head for about an hour on this ) nm

[/thread].

[Edited on March 16, 2011 at 12:28 PM. Reason : .]

3/16/2011 12:28:02 PM

so you gonna share your solution then?

3/16/2011 1:29:53 PM

I think scanf needs %lf for the double. The following seems to work:

#include <stdio.h>

int main()
{
double input;
scanf("%lf", &input);

printf("%f\n", input);
int g=(input*100);
printf("new input is %d\n", g);
if(input<=0)
printf("No input");

return 0;
}

3/16/2011 1:38:29 PM

^^ dakota_man posted it.

Works perfectly. After writing a few functions, tons of if/else statements, I brain farted over simple syntax

[Edited on March 16, 2011 at 2:19 PM. Reason : .]

3/16/2011 2:18:46 PM

well at least you didn't post this on StackOverflow

3/16/2011 2:26:40 PM

Any particular reason you can't explicitly type cast (and then output if thats ultimately what you are trying to do)?

3/16/2011 5:33:14 PM

because I'm a n00b, learning C, and this is for a project for my ece 220 class.

3/16/2011 7:53:17 PM

they teach C in 220 now?

3/16/2011 8:30:26 PM

my first thout was to cast also, something like (int)(100*input)

3/16/2011 8:30:38 PM

they teach C in 220 now?

3/16/2011 8:48:42 PM

they teach C in 220 now?

3/17/2011 12:31:21 AM

I meant 209. My bad

3/17/2011 9:50:52 AM