Question

How to get the smallest value not less than a given value in C

Answer 1

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

int main(void)
{
    double d = ceil(2.6);

    printf("%lf", d);
}






/*
run:

3.000000

*/

 

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Answer 2

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

int main(void)
{
    float f = ceilf(-2.6);

    printf("%f", f);
}





/*
run:

-2.000000

*/

 

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Answer 3

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

int main(void)
{
    long double ld = ceill(13.1);

    printf("%Lf", ld);
}





/*
run:

14.000000

*/

 

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