MATLAB Answers


Change format in created C code

Asked by Luis Ruiz on 18 Jun 2018
Latest activity Edited by Walter Roberson
on 27 Dec 2018
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);
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.


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2 Answers

Answer by Ryan Livingston on 19 Jul 2018
 Accepted Answer

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


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Answer by upol
on 27 Dec 2018
Edited by Walter Roberson
on 27 Dec 2018

I am trying to convert this simple code into excutable using matlab coder.
function y = hello_world
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.

  1 Comment

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.

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