asset_thing.c

// Just a little thing to increment asset tag numbers
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

void inc_tag(char *format, char *tag)
{
    for (int i = strlen(format) - 1; i > -1; i--)
    {
        switch (format[i])
        {
        case 'A': // Alpha
            if (tag[i] == 'Z')
            {
                tag[i] = 'A';
                continue;
            }
            tag[i]++;
            break;
        case 'V': // Alpha, no vowels or Y
            if (tag[i] == 'Z')
            {
                tag[i] = 'B';
                continue;
            }
            tag[i]++;
            switch (tag[i])
            {
            case 'E':
            case 'I':
            case 'O':
            case 'U':
            case 'Y':
                tag[i]++;
            }
            break;
        case 'N': // Numeric
            if (tag[i] == '9')
            {
                tag[i] = '0';
                continue;
            }
            tag[i]++;
        }
        break;
    }
}

int main()
{
    char *hehe = malloc(5);
    strcpy(hehe, "AA00");
    for (int i = 0; i < 500; i++)
    {
        inc_tag("AANN", hehe);
        printf("%s\n", hehe);
    }

    return 0;
}