Ceil round floor

 

Ceil is the "ceiling"
The floor is a "floor" top-up value, and the other bottom-up value, like a ceiling, floor.

 

 

 

Double floor (Double X );

Double Ceil (Double X );

Use the floor function.

Floor (x) returns the largest integer less than or equal to X.

For example, floor (10.5) = 10 floor (-10.5) =-11

 

Use the ceil function.

Ceil (x) returns the smallest integer greater than X.

For example, Ceil (10.5) = 11 Ceil (-10.5) =-10

 

Floor () is an integer down, floor (-10.5) =-11;

Ceil () is rounded up, Ceil (-10.5) =-10

 

 

 

Ceil (x) returns the smallest integer not less than X (then converted to double type ).

 

Floor (x) returns the maximum integer not greater than X.

 

Round (x) returns x rounded to an integer.

 

 

 

 

# Include <stdio. h>

 

# Include <math. h>

 

Int main (INT argc, const char * argv [])

 

{

 

Float num = 1.4999;

 

Printf ("Ceil (% F) is % F \ n", num, Ceil (Num ));

 

Printf ("floor (% F) is % F \ n", num, floor (Num ));

 

Printf ("round (% F) is % F \ n", num, round (Num ));

 

Return 0;

 

}

 

 

 

 

Ceil (1, 1.499900) is 2.000000

 

Floors (1.499900) is 1.000000

 

Round (1.499900) is 1.000000