Table of Contents
What is the precision of float in C?
float is a 32 bit IEEE 754 single precision Floating Point Number1 bit for the sign, (8 bits for the exponent, and 23* for the value), i.e. float has 7 decimal digits of precision.
For what float is used in C?
floating point numbers
Float is a datatype which is used to represent the floating point numbers. It is a 32-bit IEEE 754 single precision floating point number ( 1-bit for the sign, 8-bit for exponent, 23*-bit for the value. It has 6 decimal digits of precision.
Can float be compared in C?
The short answer is that due to the way floating point numbers are represented, you cannot do basic comparison or arithmetic and expect it to work.
Can we add int and float in C?
Yes, an integral value can be added to a float value. The basic math operations ( + , – , * , / ), when given an operand of type float and int , the int is converted to float first.
What is the size of float in C?
4 byte
Floating-Point Types
| Type | Storage size | Precision |
|---|---|---|
| float | 4 byte | 6 decimal places |
| double | 8 byte | 15 decimal places |
| long double | 10 byte | 19 decimal places |
Is \%F for double?
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.
Can you use \%F for double?
The short answer is that it has no impact on printf , and denotes use of float or double in scanf . For printf , arguments of type float are promoted to double so both \%f and \%lf are used for double . For scanf , you should use \%f for float and \%lf for double .
Can you multiply int and double in C?
You can’t. The JVM will cast (or promote) your int into a double before performing the operation. If your int has a declared identifier (like, if it’s a variable), it will remain an int after the multiplication. Just a copy of it will be made and cast into a double before the operation can be resolved.
Can float store integer?
So you cannot store a float value in an int object through simple assignment. You can store the bit pattern for a floating-point value in an int object if the int is at least as wide as the float , either by using memcpy or some kind of casting gymnastics (as other answers have shown).