From Rosetta Code
This programming language may be used to instruct a computer to perform a task.
Execution method: Compiled (machine code)
Garbage collected: No
Parameter passing methods: By value
Type safety: Unsafe
Type strength: Weak
Type compatibility: Nominative
Type expression: Explicit
Type checking: Static

Listed below are all of the tasks on Rosetta Code which have been solved using C1R.
Your Help Needed
If you know C1R, please write code for some of the tasks not implemented in C1R.

C1R is a general-purpose, procedural, imperative computer programming language, partially developed by André van Delft in 2011. It is a small extension to the well known C programming language, allowing for very small programs that implement tasks that are implemented by C programs at

C1R can also be regarded as an adaptive language, as the set of valid C1R programs varies with the C implementations for tasks at Rosetta Code.

The development of C1R has been inspired on the HQ9+ and C0H programming languages. HQ9+ accepts "H" in its source to print "Hello World!". C0H improves over HQ9+ by offering the full power of the C language; moreover, C0H offers a shorter path to writing a Hello World program: just create an empty file. C1R allows the user to submit a text file with just a simple reference of a task implemented in C at Rosetta Code; that reference is the implementation of the task in C1R. E.g., the following C1R program


does exactly the same as the C program listed at the "Hello_world/Text" page, namely print "Goodbye world!".


C1R is implemented using a Shell script that calls the C compiler. The script starts by testing whether C code should be downloaded from the Rosetta Code site. The Quine task is treated as a special case. See C1R Implementation


When hearing of C0H, Jelle van Zeijl suggested to make a similar language based on downloading C code from the Rosetta Code site.


To get a reference document on C1R, it is advised to upgrade a reference document on the "C" programming language, and attach a Post-it note stating C1R is like C, except that in case it contains just 1 line that directs to a Rosetta Code URL with a valid C implementation.


This category has the following 3 subcategories, out of 3 total.

Pages in category "C1R"

The following 3 pages are in this category, out of 3 total.