Why was Fortran never used to develop an Operating System?

I’m not a Fortran developer myself, but I’m about to use it a little and found myself wondering why, if it is much older than C but equally as performant as C, was it never used to develop any operating system before C and UNIX came along?

Why was Fortran never used to develop an Operating System?

I’m not a Fortran developer myself, but I’m about to use it a little and found myself wondering why, if it is much older than C but equally as performant as C, was it never used to develop any operating system before C and UNIX came along?

Using subroutines to return values?

I’m currently learning FORTRAN (I am familiar with MatLab) and I am very confused about the point of subroutines. Why would anyone use them as opposed to functions. Also, how is it that they can return values when called in the main programs? For example:

I am a student at University. This is my first time using computer,programming. I am not able to cope up with them , feeling lost with them. Now what?

I am not getting the coding in my heart? Just memorising. Unable to enjoy coding

Why is the compile-time constant error occurring and how do I resolve it?

I’m a Fortran user

Why does the accuracy of the output data change?

I used a double precision allocatable array to read data from one file as follows.

How to overwrite part of a binary file?

I want to process a binary file and write the results into a new one of the same format.

XML Transformation in GoAnywhere MFT using XSL

I am a beginner in GoAnywhere MFT
I have a following use case and would really appreciate if someone can point me towards the correct path/guide me with the solution.