printf %f with only 2 numbers after the decimal point?

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In my printf, I need to use %f but I'm not sure how to truncate to 2 decimal places:

Example: getting

3.14159

to print as:

3.14

Use this:

printf ("%.2f", 3.14159);

Two decimal places using printf( ), How do you print two values after the decimal point in Python? Answers: System.out.printf("%.2f", number); BUT, this will round the number to the nearest decimal point you have mentioned.(As in your case you will get 3.14 since rounding 3.14159 to 2 decimal points will be 3.14) Since the function printf will round the numbers the answers for some other numbers may look like this,

You can use something like this:

printf("%.2f", number);

If you need to use the string for something other than printing out, use the NumberFormat class:

NumberFormat formatter = new DecimalFormatter("#.##");
String s = formatter.format(3.14159265); // Creates a string containing "3.14"

How to print float value till number of decimal points using printf in C , How do you find the number of digits after a decimal point? Use "%.nf" format specifier By using this format specifier we can print specific number of digits after the decimal, here "n" is the number of digits after decimal point. Consider the program, here we will print 2 digits after the decimal point.

System.out.printf("%.2f", number);

BUT, this will round the number to the nearest decimal point you have mentioned.(As in your case you will get 3.14 since rounding 3.14159 to 2 decimal points will be 3.14)

Since the function printf will round the numbers the answers for some other numbers may look like this,

System.out.printf("%.2f", 3.14136); -> 3.14
System.out.printf("%.2f", 3.14536); -> 3.15
System.out.printf("%.2f", 3.14836); -> 3.15

If you just need to cutoff the decimal numbers and limit it to a k decimal numbers without rounding,

lets say k = 2.

System.out.printf("%.2f", 3.14136 - 0.005); -> 3.14
System.out.printf("%.2f", 3.14536 - 0.005); -> 3.14
System.out.printf("%.2f", 3.14836 - 0.005); -> 3.14

How to print a float with two decimal places in Python, How do you round to 2 decimal places in C++? Printf, doubles and decimal places This example program demonstrates how to print double-precision numbers to a certain number of decimal places using printf .

Try:

printf("%.2f", 3.14159);

Reference:

http://www.cplusplus.com/reference/clibrary/cstdio/printf/

C++ round a double up to 2 decimal places, In this output the number of digits after decimal are 6, which is default format of float value printing. Now, we want to print 2 digits only after  In short, the %.2f syntax tells Java to return your variable ( val) with 2 decimal places ( .2) in decimal representation of a floating-point number ( f) from the start of the format specifier ( % ). There are other conversion characters you can use besides f: d: decimal integer. o: octal integer. e: floating-point in scientific notation.

as described in Formatter class, you need to declare precision. %.2f in your case.

5 Examples of Formatting Float or Double Numbers to String in Java , format("%. 2f", 1.23456); This will format the floating point number 1.23456 up-to 2 decimal places, because we have used two after decimal point in formatting instruction %. 2f, f is for floating point number, which includes both double and float data type in Java. Assuming you're talking about round the value for printing, then Andrew Coleson and AraK's answer are correct:. printf("%.2f", 37.777779); But note that if you're aiming to round the number to exactly 37.78 for internal use (eg to compare against another value), then this isn't a good idea, due to the way floating point numbers work: you usually don't want to do equality comparisons for

Setting decimal precision in C, How to print floating point numbers with a specified precision? In C, there is a format specifier in C. To print 4 digits after dot, we can use 0.4f in printf(). setprecision()) · Rounding Floating Point Number To two Decimal Places in C and C++  The used in the printf statements is called an escape sequence. In this case it represents a newline character. After printing something to the screen you usually want to print something on the next line. If there is no then a next printf command will print the string on the same line. Commonly used escape sequences are: \v (vertical tab)

printf, fprintf, sprintf, The format is a character string that contains two types of objects: plain the number of digits to appear after the decimal point for the e and f conversions, the​  You will see updates in your activity feed. You may receive emails, depending on your notification preferences. I would like to display a number with only two digits after the decimal point in MATLAB. What is the relation to the tag "digital signal processing"? Can you explain any details concerning the question, please?

Formatting Numeric Print Output (The Java™ Tutorials > Learning , The java.io package includes a PrintStream class that has two formatting methods These methods, format and printf , are equivalent to one another. + "the float variable is " + "%f, while the value of the " + "integer variable is %d, " + "​and place of the decimal place in the English representation of floating point numbers),  System.out.printf("%.2f", number); BUT, this will round the number to the nearest decimal point you have mentioned.(As in your case you will get 3.14 since rounding 3.14159 to 2 decimal points will be 3.14) Since the function printf will round the numbers the answers for some other numbers may look like this,

Comments
  • It should be noted that this actually rounds the number, it does not just cut it off.
  • this should be the selected answer