cooper-union-ece-160/2-introduction-to-c-programming/13-functions.c

#include <stdio.h>
#include <stdlib.h>

void sayHi(char name[], int age);

int main() {
  sayHi("Mike", 40);
  sayHi("Tom", 23);
  sayHi("Oscar", 87);
  return 0;
}

void sayHi(char name[], int age) {
  printf("Hello %s, you are %d\n", name, age);
}