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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct {
int age;
int happiness; // 0 sad, 100 happy
} Person;
void slide(Person *person)
{
person->happiness += 10;
}
// pass by value
// pass by reference
int main(int argc, char *argv[])
{
Person *mo = malloc(sizeof(Person));
mo->age = 36;
mo->happiness = 70;
printf("Before: age(%d), happiness(%d)\n", mo->age, mo->happiness);
slide(mo);
printf("After: age(%d), happiness(%d)\n", mo->age, mo->happiness);
}
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