The ceil() function is defined in the <math.h> header file. Tip: To round a number DOWN to the nearest integer, look at the floor() function. Tip: To round a number to the nearest integer in either direction, look at the round() function. ... If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail: sales@w3schools.com

The ceil() function computes the nearest integer greater than the argument passed.

The C library ceil() function of type double accept the single argument(x) that returns the smallest integer value greater than or equal to, by the given value. This method rounded up the nearest integer.

May 23, 2024 - #include <math.h> #include <stdio.h> int main(void) { printf("ceil(+2.4) = %+.1f\n", ceil(2.4)); printf("ceil(-2.4) = %+.1f\n", ceil(-2.4)); printf("ceil(-0.0) = %+.1f\n", ceil(-0.0)); printf("ceil(-Inf) = %+f\n", ceil(-INFINITY)); }

December 16, 2005 - The ceil() function returns the smallest integer that is greater than or equal to its argument. However, the function does not have an integer type; it returns an integer value, but with a floating-point type.

July 7, 2024 - It is defined inside the <math.h> ... double, or long double. The ceil() function returns the smallest integer value greater than or equal to the input number as a double....

December 24, 2022 - #include <math.h> #include <stdio.h> int main(void) { double x, y, z; x = 123.345; y = 1.05; z = -1.05; printf("Before applying ceil():"); printf("\nx = %.3f ; y = %.2f ; z = %.2f\n", x, y, z); x = ceil(123.345); y = ceil(1.05); z = ceil(-1.05); printf("\n\nAfter applying ceil():"); printf("\nx = %.3f ; y = %.2f ; z = %.2f\n", x, y, z); } ... Before applying ceil(): x = 123.345 ; y = 1.05 ; z = -1.05 After applying ceil(): x = 124.000 ; y = 2.00 ; z = -1.00

/* Example using ceil by TechOnTheNet.com */ #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 ceil of */ value = 1.6; /* Calculate the ceil of value */ result = ceil(value); /* Display the result of the calculation */ printf("The ceil of %f is %f\n", value, result); return 0; }

Tip: To round a number UP to the nearest integer, look at the ceil() function. Tip: To round a number to the nearest integer in either direction, look at the round() function. ... If you want to use W3Schools services as an educational institution, ...

January 4, 2026 - ... Parameter: A floating-point number (x) to round up.Return value: The smallest integer value greater than or equal to x, returned as a double. The ceil() function accepts a single argument and returns an integer value.

double ceil(double num); float ceil(float num); long double ceil(long double num); // for integral types double ceil(T num); #include <iostream> #include <cmath> using namespace std; int main() { double num = 10.25;

December 22, 2025 - ceil(double number); ❮ Math Functions · C Functions Tutorial · C Math Functions Tutorial · ★ +1 · Sign in to track progress · REMOVE ADS · PLUS · SPACES · GET CERTIFIED · FOR TEACHERS · BOOTCAMPS · CONTACT US · × · If you want ...

(round down) 2.8 --> 2 CEIL - To get the ceil, just remove the decimal next to it then add 1 (round up) 2.2 --> 3 For negative numbers, just do the opposite. ROUND Get the Floor if next decimal is less than 5.

September 23, 2020 - C ceil() function:ceil( ) function in C returns nearest integer value which is greater than or equal to the argument passed to this function.

September 20, 2022 - Ceil function is used to round up a number i.e. it returns the smallest number which is greater than argument passed to it · Declaration: double ceil(double);

Answer (1 of 5): C Language: ceil function (Ceiling) In the C Programming Language, the ceil function returns the smallest integer that is greater than or equal to x (ie: rounds up the nearest integer).

April 20, 2022 - The ceil function in C returns the nearest integer greater than the provided argument. If the integer is provided to the ceil function, it will return the same integer.