Simula

Simula is an object-oriented programming language developed in the 1960s at the Norwegian Computing Center. It introduced foundational object-oriented concepts including classes, objects, inheritance, and subclasses.

Installation

On Ubuntu, Simula code can be compiled using GNU Cim (cim), which translates Simula 67 code to C and compiles it using GCC.

Install build dependencies and compile GNU Cim from source:

apt update
apt install -y build-essential autoconf git
git clone https://github.com/bruteforce774/simula.git
cd simula
CFLAGS="-O2 -std=gnu89 -Wno-implicit-int -Wno-implicit-function-declaration -Wno-return-mismatch" ./configure --prefix=/usr/local
make
make install

Verification

Check that the GNU Cim compiler is properly installed:

cim --version

Writing and Compiling Code

Create a Simula source file named hello.sim:

Begin
   OutText ("Hello, World!");
   OutImage;
End;

Compile the Simula program:

cim -o hello hello.sim

Run the compiled binary:

./hello

Official Resources

• Official Website