How can we display floats in cpp without including <cstdio>? I tried by cout but it won't display decimal digits after "0". | SoloLearn: Learn to code for FREE!

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How can we display floats in cpp without including <cstdio>? I tried by cout but it won't display decimal digits after "0".

//used setprecision() for required digits #include <iostream> #include<iomanip> using namespace std; int main() { int a; long int b; char c; float d; double e; cin>>a>>b>>c>>d>>e; cout<<setprecision(20)<<a<<endl<<b<<endl<<c<<endl<<d<<endl<<e; return 0; } /* sample i/p:- 3 1354257897655556 a 334.2304 14049.304930000 */

5/20/2020 4:21:55 AM

Aditya Raj

18 Answers

New Answer

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I think you can just type fixed<<setprecision(20)

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What do you mean? Do you mean 2.7............?

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YCS-Venom Thanks for reply. Works fine upto 6 decimal digits. "cout<<fixed<<a<<endl<<b<<endl<<c<<endl<<d<<endl<<e;" like this

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How much do you want?

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And do you want to fill it with zeros?

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Only 6 digits were needed. But what if we want all digits for double e

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Aditya Raj Why don't use printf()?

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YCS-Venom I meant 14049.30493000

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just type like this double x=14049.30493000 ; cout<<fixed<<setprecision(8)<<x; Or you can type it directly

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YCS-Venom Yeah, I get that. But there are multiple test cases. I can't initialise any of them. Without using "setprecision ()" or "fixed" 5 out of 9 were wrong but I used fixed and it worked. So, thanks a lot.

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Is it code couch?

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YCS-Venom No, it was some random question on hackerrank.

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Can you give me the link?

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YCS-Venom It was one of the easy ones. Just trying without using printf Link: http://hr.gs/4ljk3

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Aditya Raj That's work fine int main() { int a; long int b; char c; float d; double e; cin>>a>>b>>c>>d>>e; cout<<a<<endl<<b<<endl<<c<<endl<<fixed<<d<<endl<<e; return 0; }

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YCS-Venom Yeah, it works.

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You should use casting just like this: Cout<<float(x+y); As if one of the variables x, y or both of them is float , the result will be float. Even if the two variables were integers the result will either be float.