Dev C++ Printf Float
Nov 22, 2019 Skill Level: Intermediate I am sure many of you are familiar with the venerable printf function in C. However, using the cout (standard output stream) object from the iostream standard library is the preferred method for printing in C. Most programmers quickly pick up the basics of using cout, but often get tripped up when trying to format floating point numbers. Integers are great for counting whole numbers, but sometimes we need to store very large numbers, or numbers with a fractional component. A floating point type variable is a variable that can hold a real number, such as 4320.0, -3.33, or 0.01226. The floating part of the name floating point refers to the fact that the decimal point can “float”; that is, it can support a variable. Printing float values with fixed number of decimal places through cout in C Here, we will learn how to print float value with fixed number of decimal places using cout in C program? Cout prints a floating pointer number with a maximum of 6 decimal places (some compilers may print 5 decimal places) by default (without trailing zeros).
I have a column of floating point data that I need to right justify and align the decimal points. Help.
C Scanf
Data looks something like this.
C++ Printf %d
30.768
1.345
.430
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Dev C++ Printf Float 2
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When in doubt, use the old workhorse printf(). I have played around with manipulators like [php]cout << setfill('0') << setw(8) << d1;
[/php] with results that cause only consternation. The old printf() like Chainsaw mentioned works well:
[php]// right justified numeric output (Dev-C++)
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Chainsaw12
you could, for example, use printf or sprintf or its ilk. Take a look at the specifications for the strings. You can control right or left justification, leading zeros, number of digits after the decimals, etc.
If your output is using a proportional font, the spaces won't be as wide as the digits, so that can be a problem too; hopefully you will use a non-proportional font, or else you'll have to do placement in some measurement like pixels or inches.