Hi! I'm Naoya. This is the first mail to this ML.
First, thank you for developing such awesome packages!
I found ob-C sample[1] is not working for me, I report that to this ML.
## Repro step
1. Require org and ob-C.
2. Write below in some org buffer.
```org
#+tblname: somedata
| nb | sqr | noise |
|-------+-----+-------|
| zero | 0 | 0.23 |
| one | 1 | 1.31 |
| two | 4 | 4.61 |
| three | 9 | 9.05 |
| four | 16 | 16.55 |
#+name: c-table
#+header: :exports results
#+begin_src C++ :var somedata=somedata
int main()
{
for (int i=0; i<somedata_rows; i++) {
printf ("%2d %7s ", i, somedata_h(i,"nb"));
for (int j=1; j<somedata_cols; j++) {
const char* cell = somedata[i][j];
printf ("%5s %5g ", cell, 1000*atof(cell));
}
printf("\n");
}
return 0;
}
#+end_src
```
3. Babel src block via C-c C-c.
4. Error occurred. I get below error output
```
/tmp/babel-kMPbac/C-src-KDQDdx.cpp: In function ‘int get_column_num(int, const char**, const char*)’:
/tmp/babel-kMPbac/C-src-KDQDdx.cpp:17:9: error: ‘strcmp’ was not declared in this scope
17 | if (strcmp(header[c],column)==0)
| ^~~~~~
/tmp/babel-kMPbac/C-src-KDQDdx.cpp:1:1: note: ‘strcmp’ is defined in header ‘<cstring>’; did you forget to ‘#include <cstring>’?
+++ |+#include <cstring>
1 |
/tmp/babel-kMPbac/C-src-KDQDdx.cpp: In function ‘int main()’:
/tmp/babel-kMPbac/C-src-KDQDdx.cpp:27:5: error: ‘printf’ was not declared in this scope
27 | printf ("%2d %7s ", i, somedata_h(i,"nb"));
| ^~~~~~
/tmp/babel-kMPbac/C-src-KDQDdx.cpp:1:1: note: ‘printf’ is defined in header ‘<cstdio>’; did you forget to ‘#include <cstdio>’?
+++ |+#include <cstdio>
1 |
/tmp/babel-kMPbac/C-src-KDQDdx.cpp:30:38: error: ‘atof’ was not declared in this scope
30 | printf ("%5s %5g ", cell, 1000*atof(cell));
| ^~~~
zsh:1: permission denied: /tmp/babel-kMPbac/C-bin-EfCzWt
```
## Some note
- These errors caused because a lack to include some library.
- Add some include statement generate and insert it in `org-babel-C-utility-header-to-C`?
- Add new option for a user preamble and insert it in `org-babel-C-expand-C`?
Regards,