C Language: floor function(Floor)

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C Programming allows us to perform mathematical operations through the functions defined in header file. The header file contains various methods for performing mathematical operations such as sqrt(), pow(), ceil(), floor() etc.

C Math Functions

In the C Programming Language, the floor function returns the largest integer that is smaller than or equal to x (ie: rounds downs the nearest integer).

Syntax

The syntax for the floor function in the C Language is




double floor(double x);


Parameters or Arguments

The value to round down to the nearest integer.

Returns

The floor function returns the largest integer that is smaller than or equal to x.

Required Header

In the C Language, the required header for the floor function is:




#include <math.h>


Applies To

In the C Language, the floor function can be used in the following versions

  • ANSI/ISO 9899-1990

floor Example




/* Example using floor by c programming */

#include <stdio.h>
#include <math.h>

int main(int argc, const char * argv[])
{
    /* Define temporary variables */
    double value;
    double result;

    /* Assign the value we will find the floor of */
    value = 1.6;

    /* Calculate the floor of value */
    result = floor(value);

    /* Display the result of the calculation */
    printf("The floor of %f is %f\n", value, result);

    return 0;
}


When compiled and run, this application will output

The floor of 1.600000 is 1.000000




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