C/math.h/rint
rint: returns the value of arg rounded to the nearest integer
//Declaration: float rintf(float arg);
double rint(double arg);
long double rintl(long double arg);
#include <math.h>
#include <stdio.h>
int main(void)
{
printf("%f\n", rint (11));
return 0;
}
/*
11.000000
*/