ceil, ceilf, ceill - round up floating point number

Definition	#include <math.h> double ceil(double x); float ceilf(float x); long double ceill(long double x); These functions round up a floating-point number to an integer value.
Return val.	Lowest integer in floating point format which is greater than or equal to x
Example	#include <math.h> #include <stdio.h> int main(void) {  double x;   printf("Please enter the floating-point number to be rounded up:\n");   if (scanf("%lf", &x) == 1)       printf("The number %g is being rounded up to %f\n", x, ceil(x));   return 0; }
See also	abs, fabs, floor