Solution for Exercise 16-7

ex1607

#include <stdio.h>

void half(void);
void twice(void);

int age;
float feet;

int main()
{
    printf("How old are you: ");
    scanf("%d",&age);
    printf("How tall are you (in feet): ");
    scanf("%f",&feet);
    printf("You are %d years old and %.1f feet tall.\n",age,feet);
    half();
    twice();
    printf("But you're not really %d years old or %.1f feet tall.\n",age,feet);
    return(0);
}

void half(void)
{
    float a,h;

    a=(float)age/2.0;
    printf("Half your age is %.1f.\n",a);
    h=feet/2.0;
    printf("Half your height is %.1f.\n",h);

}

void twice(void)
{
    age*=2;
    printf("Twice your age is %d.\n",age);
    feet*=2;
    printf("Twice your height is %.1f\n",feet);
}
Exercise ex1608 →