HQ9-

HQ9- is a derivative of HQ9+ by User:None1.

Commands

HQ9- and HQ9+ has only 2 diffenerces:

1. HQ9-'s accumulator only supports non-positive numbers.
2. HQ9- has the - command for decrement instead of the + command for increment in HQ9+.

Example Programs

Hello World

H

Quine

Q

99 bottles of beer

9

Decrements the accumulator

-

From an end user's perspective, it is equivalent to doing nothing.

Decreases the accumulator by 3

---

From an end user's perspective, it is equivalent to doing nothing.

Implementation

Based on the work of User:A

#include <stdio.h>
int main()
{
    unsigned long accumulator = 0;
    char c[1000];
    for(int i=0;;i++)
    {
        scanf("%c",&c[i]);
        if(c[i]=='\n') break;
    }
    for(int i=0;c[i]!='\0';i++)
    {
        if(c[i]=='H') printf("Hello, World!\n");
        else if(c[i]=='Q') printf("%.*s", (int)sizeof c, c);
        else if(c[i]=='9')
        {
                for(int j=99;j>0;j--)
                {
                    printf("%d bottles of beer on the wall,\n%d bottles of beer.\n", j, j);
                    printf("Take one down, pass it around,\n%d bottles of beer on the wall.\n", j-1);
                }
                printf("1 bottle of beer on the wall,\n1 bottle of beer.\nTake one down, pass it around,\nno more bottles of beer on the wall.\n");
        }
        else if(c[i]=='-') accumulator--;
    }

    return 0;
}