Hey everyone! Today, let's dive into the world of 3D modeling and see how we can create an OBJ file in C programming language.

First, we need to understand what an OBJ file is. It is a simple data format used to represent 3D models. It stores the geometric data of the 3D model, such as vertices, textures, normals, and faces.

To create an OBJ file in C, we will utilize file handling techniques. We'll start by opening a new file using the 'fopen' function. We can then write the necessary data to the file using the 'fprintf' function.

Let's begin by creating a function to write the vertices of the 3D model to the OBJ file. We can use a for loop to iterate through the vertices and write their coordinates to the file.

Next, we can write the texture coordinates and normals of the 3D model to the file using similar techniques. We'll iterate through the texture coordinates and normals and write them to the file using the 'fprintf' function.

After writing the geometric data, we need to write the faces of the 3D model to the file. Again, we can use a for loop to iterate through the faces and write the vertex indices to the file.

Finally, we need to close the file using the 'fclose' function to ensure that all the data is properly written and saved.

Once we have completed these steps, we will have successfully created an OBJ file in C to store the 3D model data!

In conclusion, creating an OBJ file in C involves using file handling techniques to write the geometric data of the 3D model to a new file. By understanding the structure of an OBJ file and utilizing functions like 'fopen' and 'fprintf', we can efficiently store 3D model data in a custom OBJ file.

So, if you're interested in delving into 3D modeling and want to work with OBJ files in C programming, give this a try! Happy coding!