Maybe you could use the C compiler instead of C++, or you could include the c libraries you need. try these options: ---- #+begin_src C :var somedata=somedata ---- #+begin_src C++ :var somedata=somedata :includes '(<cstring> <stdlib.h> <cstdio>)
On Mon, Jun 22, 2020 at 8:56 PM Naoya Yamashita <con...@gmail.com> wrote: > 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. > > [1]: > https://orgmode.org/worg/org-contrib/babel/languages/ob-doc-C.org.html > > ## 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, >
