c - run C code fragments from the commandline.

Usage: c [<options>] <C-sourcecode> [<arguments>]

The c utility wraps a bare-bones C program around the C source code fragments 
specified by the user, compiles the program, runs the program with <arguments> 
passed to it on its command line, and then removes the temporary files it 
created (the C source file and the executable).

Options:
   -h or --help   Show this usage message and exit.

   -i=<filename>
   -I=<filename>  Add an #include for the given filename.  ".h" will be appended
                  to the filename unless it already ends in ".h" or ".c".  By
                  default it will be included with <>-brackets, eg: -I=foo
                  produces '#include <foo.h>', but if foo is enclosed in ""'s it
                  will be included with quotes, eg: -I='"foo"' produces
                  '#include "foo.h"'.

   -f='...'
   -F='...'       Prepends a function before declaring main().  For instance:
                  c -f='int foo(){return 1;}' 'printf("%d\n",foo());'

   --cflags='..'
   --CFLAGS='..'  Override the default arguments sent to gcc.  By default the
                  arguments are: "-I. -O0".  Alternatively, set the CFLAGS 
                  environment variable (which would be overridden by using this
                  command line option).

   -r             Show the exit code after all other output.

   --save-temps   Do not delete temporary files (in /tmp).

Note: By default, "stdio.h", "stdlib.h", "string.h", "unistd.h", and "time.h"
will be #include'd for you (since these are so commonly used).

Note: The main function is declared as:  int main(int ac, char *av[])

Note: -std=gnu99 is always passed to gcc, and there is nothing you can do about 
it (except modifying this script, which I would encourage).

Examples of use:

# ./c 'for(int i = 1; i <= ac; i++){printf("%s\n", av[i]);}' ichi ni san shi re
ichi
ni
san
shi
re

# ./c 'for(int i = 0; i < 4; i++){printf("meow\n");}' --save-temps
meow
meow
meow
meow

# cat /tmp/clip13282.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
int main(int ac, char *av[]) {
  for(int i = 0; i < 4; i++){printf("meow\n");}
  }