2f in C language

Float data type in c:

Double-precision floating-point numbers with up to 17 significant digits are stored in the FLOAT data type. FLOAT is equivalent to C's double data type and IEEE 4-byte floating-point.

The FLOAT data type's value range is identical to your computer's C double data type's value range. Integer and double are further prevalent data types. Now let us see the syntax that is used to define float data type.

Syntax of float data type:

There is a particular syntax to define each and every variable or data type or any of the function. So the syntax to define a float variable is as shown below:

float  var_name = value;

So we can declare a float variable by using the above syntax. Now let us see an example to define a float data type using the following code as shown below :

Example:

# include < stdio . h >
# include < conio . h >
void main ( void )
{
int a = 10;
float f = 55.63847;
printf ( “ % d \ n “ , a );
printf ( “ % f \ n “ , f );
} // main method

Output:

10
55.63847

Now let us see another example to define a float data type using the following code as shown below:

Example:

# include < stdio . h >
# include < conio . h >
void main ( void )
{
int a;
float f;
scanf ( “ % d “ , & a );
scanf ( “ % f “ , & f );
printf ( “ % d \ n “ , a );
printf ( “ % f \ n “ , f );
} // main method

Input and Output:

// Input
a = 25
f = 84.518792
// Output
25
84.518792

We can also round up the float values using certain kind of syntax while printing the float value. Now let us see rounding off float value upto two decimal places using . 2 f.

2f in C language:

The "% . 2" instructs "print" to print only the first two digits following the point. "print" treats the % as a special character you need to include so it can know that when you enter "f", the number (result) that will be printed will be a floating point type.

The instruction "2f" instructs the printf method to print a floating point value (in this case, the double, x) with two decimal places. Similar to how, if we had used "%. 3f," x would have printed with three decimal places.

 Now let us see few more examples using the format specifier “ % .2f “ using the following code as shown below :

Example:

# include < stdio . h >
# include < conio . h >
void main ( void )
{
int a = 42;
float f = 79.35423;
printf ( “ % d \ n “ , a );
printf ( “ % 0 . 2f \ n “ , f );
} // main method

Output:

42
79.35

Now let us see another example to define a float data type using the following code as shown below:

Example:

# include < stdio . h >
# include < conio . h >
void main ( void )
{
int a;
float f;
scanf ( “ % d “ , & a );
scanf ( “ % f “ , & f );
printf ( “ % d \ n “ , a );
printf ( “ % 0 . 2f \ n “ , f );
} // main method

Input and Output:

// Input
a = 97
f = 572.264786
// Output
97
572.26

We can also round off the given float variable or value to the particular number by using the format specifiers such as “% 0 . 3f “to round the values upto 3 decimal places , “ % 0 . 4f “to round the values upto 4 decimal places and so on.

We will round off the values to predict the result in accurate manner.