How do I print a long double in C++?

How do I print a long double in C++?

%Lf format specifier for long double %lf and %Lf plays different role in printf. So, we should use %Lf format specifier for printing a long double value.

How do you print a long value in C++?

Put an l (lowercased letter L) directly before the specifier. printf(“%ld”, ULONG_MAX) outputs the value as -1. Should be printf(“%lu”, ULONG_MAX) for unsigned long as described by @Blorgbeard below.

How do I set precision in printf?

A printf precision specification always begins with a period (.) to separate it from any preceding width specifier. Then, like width, precision is specified in one of two ways: Directly, through a decimal digit string. Indirectly, through an asterisk (*).

How do I print double in printf?

We can print the double value using both %f and %lf format specifier because printf treats both float and double are same. So, we can use both %f and %lf to print a double value.

What is long double in C++?

Type long double is a floating point type that is larger than or equal to type double . Microsoft-specific: The representation of long double and double is identical. However, long double and double are treated as distinct types by the compiler.

How do I print long?

You must use %ld to print a long int , and %lld to print a long long int . Note that only long long int is guaranteed to be large enough to store the result of that calculation (or, indeed, the input values you’re using).

How do I print long long value?

To print a long value, use the %ld format specifier. You can use the l prefix for x and o, too. So you would use %lx to print a long integer in hexadecimal format and %lo to print in octal format. C allows both uppercase and lowercase letters for constant suffixes, these format specifiers use just lowercase.

How do I print long long int using printf?

For most other platforms you’d use %lld for printing a long long. (and %llu if it’s unsigned). This is standarized in C99.

How do you set precision in C++?

Let’s see the simple example to demonstrate the use of setprecision:

1. #include // std::cout, std::fixed.
2. #include // std::setprecision.
3. using namespace std;
4. int main () {
5. double f =3.14159;
6. cout << setprecision(5) << f << ‘\n’;
7. cout << setprecision(9) << f << ‘\n’;
8. cout << fixed;

How do I limit decimal places in C++?

The C++ setprecision can also be used to format only the decimal places instead of the whole floating-point or double value. This can be done using the fixed keyword before the setprecision() method.

How do I get 2 decimal places in C++?

We use the %. 2f format specifier to display values rounded to 2 decimal places.