#include <stdio.h>
#include <math.h>
int main () {
double x;
x = 0.5;
printf("The hyperbolic cosine of %lf is %lf\n", x, cosh(x));
x = 1.0;
printf("The hyperbolic cosine of %lf is %lf\n", x, cosh(x));
x = 1.5;
printf("The hyperbolic cosine of %lf is %lf\n", x, cosh(x));
return(0);
}