How to use printf to view float type variables?

Question

Possible Duplicate:
C++: What is the printf() format spec for “float”?

I am new to C++ , and Use the classic Borland Turbo C++

with the graphics initialized , when i use printf the following way, it shows value 0. but when i use cout the correct value is displayed

float x=10;
printf("%d",x);   // displays 0
cout<<x;        // displays 10

Also try a web-search for "printf format specifiers" or similar... — , Jun 11 '12 at 21:16

score 5 · Accepted Answer · answered Jun 11 '12 at 21:14

5

You can use the %f modifier to display floating-point values with printf:

printf("%f", x);

Hope this helps!

answered Jun 11 '12 at 21:14

templatetypedef

score 1 · Answer 2 · answered Jun 11 '12 at 21:16

1

Try using %f instead.

%d is for integers. Consider reading this:

answered Jun 11 '12 at 21:16

Andrew De Forest

As an FYI, I would suggest not using cplusplus.com as a reference. They've historically had some inaccuracies in their API docs, though it's possible that they've fixed things up by now. – templatetypedef Jun 11 '12 at 21:18

score 0 · Answer 3 · edited Jun 12 '12 at 14:06

0

If you want to print two decimals, you should use:

Printf("%2f",var);

edited Jun 12 '12 at 14:06

TRR

answered Jun 11 '12 at 21:33

jordi

3 Answers3