Change format in created C code

I am using Matlab coder to port code to C, e.g. for the next function:

function sum_out = my_sum( x )
sum_out = 0;
for i=1:size(x,1)
    sum_out = sum_out + x(i);
end
end

The generated C code is:

double my_sum(const double x[10])
{
  double sum_out;
  int i;
  sum_out = 0.0;
  for (i = 0; i < 10; i++) {
    sum_out += x[i];
  }
  return sum_out;
}

Is there a way to make the indentation 4 spaces? Also, I would like to have the curly brackets in a separate line.

Answer 1

[Ryan Livingston]

The Coder configuration settings IndentSize and IndentStyle will let you achieve the changes you want:

https://www.mathworks.com/help/coder/ref/coder.embeddedcodeconfig.html

Answer 2

[upol]

I am trying to convert this simple code into excutable using matlab coder.

function y = hello_world 
%#codegen 
y = 'Hello World!'; 

converting to source code C works but when i change the build type to Executable

It gives me this error:

Build error: C compiler produced errors. See the Build Log for further details.

C:/PROGRA~3/MATLAB/SUPPOR~1/R2018b/3P778C~1.INS/MINGW_~1.INS/bin/../lib/gcc/x86_64-w64-mingw32/6.3.0/../../../../x86_64-w64-mingw32/lib/../lib\libmingw32.a(lib64_libmingw32_a-crt0_c.o):crt0_c.c:(.text.startup+0x2e): undefined reference to `WinMain'

collect2.exe: error: ld returned 1 exit status

gmake: *** [C:/dummy/hello_world.exe] Error 1

The make command returned an error of 2

'An_error_occurred_during_the_call_to_make' is not recognized as an internal or external command,

operable program or batch file.

Error(s) encountered while building "hello_world":

### Failed to generate all binary outputs.

[Ryan Livingston]

I suggest posting new question rather than adding a question as an answer to an existing post. We frequently monitor new questions. New comments and answers may not be seen.

The linker error you see means that a C main function wasn't supplied as is required to compile an executable. The Documentation describes this in more detail with an example.