/* A program to tell how many machines the mint must run to
   obtain a required output, at 93 coins/minute per machine. */

#define MACHINE_OUTPUT 93  /* coins per minute per machine */
#include <stdio.h>

main () {
    /* Declare a variable, coins, to store the coins required
       and another, machines, for the number of machines to run. */
    int coins, machines;

    /* Print a message requesting the required output/minute. */
    printf("How many coins are needed per minute? ");

    /* Input answer into coins */
    scanf("%d", &coins);

    /* Calculate the machines required. */
    machines = (coins + (MACHINE_OUTPUT - 1))/MACHINE_OUTPUT;

    /* Print the answer */
    printf("%d machines must operate.\n", machines);
}