I tried to run a sample from C Primer Plus:
Listing 2.1 The first.c Program
#+BEGIN_SRC C :results output
#include <stdio.h>
int main(void) /* a simple program */
{
int num; /* define a variable called num */
num = 1; /* assign a value to num */
printf("I am a simple "); /* use the printf() function */
printf("computer.n");
printf("My favorite number is %d because it is first.n",num);
return 0;
}
#+END_SRC
It report mysterious errors as:
/tmp/babel-xEtnj6/C-src-mefAEj.c:9:15: error: stray ‘\302’ in program
9 | int main(void) /* a simple program */
| ^
/tmp/babel-xEtnj6/C-src-mefAEj.c:9:16: error: stray ‘\240’ in program
9 | int main(void) /* a simple program */
| ^
/tmp/babel-xEtnj6/C-src-mefAEj.c:9:17: error: stray ‘\302’ in program
9 | int main(void) /* a simple program */
If main() was removed, it works:
#+BEGIN_SRC C
printf("Literature Programming");
#+END_SRC
#+RESULTS:
: Literature Programming
Unfortunately, most C code is encapsulated in 'main`.
How could I get the first example working?
You can try by adding :main no to your code block
#+BEGIN_SRC C :results output :main no
#include <stdio.h>
int main(void) /* a simple program */
{
int num; /* define a variable called num */
num = 1; /* assign a value to num */
printf("I am a simple "); /* use the printf() function */
printf("computer.n");
printf("My favorite number is %d because it is first.n",num);
return 0;
}
#+END_SRC
Also note that there are other useful modifiers like :flags, :lib, :cmdline... See Header Arguments for C, C++, D Source Code Blocks for further details.