Question

while working on the c project I found the following problem.
I declared a float variable and performed scanf operation on it. The sample code is –

<#include stdio.h>    
<#include conio.h>    
void main()    
{
   clrscr();
   float foo;
   scanf(" %f ",&foo);

   //remaining code goes here

   getch();
}

I found that the error is due to the spaces given after and before %f in scanf statement.
But I don’t know what is the reason behind it ?
thanks.

Answer 1

I think this may help you a little.

the function scanf will read and ignore any whitespace characters encountered before the next non-whitespace character (whitespace characters include spaces, newline and tab characters — see isspace).

A single whitespace in the format string validates any quantity of 
whitespace characters extracted from the stream (including none).

Also it should be like #include<stdio.h> not <#include stdio.h>