Scan/Stop examples

scanstop.m

#import "stdio.h"

// clang -g -Wall -o scanstop scanstop.m

static short intArray[] = { 1, 1, 2, 3, 5, 7, 12, 19, 31 };

static char *ravenArray[] = { "once", "upon", "a", "midnight", "dreary" };

typedef struct Groovy {
    int value;
    const char *string;
    float shoeSize;
} Groovy;

static Groovy groovyArray[] = {
    { 1, "once", 10.5 },
    { 1, "upon",  8.0 },
    { 2, "a",    11.0 },
    { 3, "midnight", 9.0 },
    { 5, "dreary", 12.5 },
    { 7, "while", 13.0 },
    { 12, "I", 8.5 },
    { 19, "pondered", 9.5}
};


static void printIntegers () {
    printf ("integers:\n");

    short *scan = intArray;
    short *stop = scan + sizeof(intArray) / sizeof(*intArray); // 18 / 2

    while (scan < stop) {
        printf ("    %d\n", *scan);
        scan++;
    }

} // printIntegers


static void printStrings () {
    printf ("strings:\n");

    char **scan = ravenArray;
    char **stop = scan + sizeof(ravenArray) / sizeof(*ravenArray);

    while (scan < stop) {
        printf ("    %s\n", *scan);
        scan++;
    }

} // printStrings


static void printGroovy () {
    printf ("groovy:\n");

    Groovy *scan = groovyArray;
    Groovy *stop = scan + sizeof(groovyArray) / sizeof(*groovyArray);

    while (scan < stop) {
        printf ("    %d: %s -> %.1f\n", scan->value, scan->string, scan->shoeSize);
        scan++;
    }

} // printGroovy


int main (void) {
    printIntegers ();
    printStrings ();
    printGroovy ();

    return 0;
} // main

#if 0

When run, this outputs:

% ./scanstop
integers:
    1
    1
    2
    3
    5
    7
    12
    19
    31

strings:
    once
    upon
    a
    midnight
    dreary

groovy:
    1: once -> 10.5
    1: upon -> 8.0
    2: a -> 11.0
    3: midnight -> 9.0
    5: dreary -> 12.5
    7: while -> 13.0
    12: I -> 8.5
    19: pondered -> 9.5

#endif