# assert_default_params.c

> Source: <https://gist.github.com/pervognsen/9d46bf9b9187cb7f89d64132dc586e07>
> Published: 2021-02-01 10:13:51+00:00

assert_default_params.c

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void
 
assert_func
(
int
 
cond
, 
const
 
char
 
*
msg
) {

 
if
 (!
cond
) {

 
fprintf
(
stderr
, 
"assert failed: %s\n"
, 
msg
);

 
abort
();

    }

}

#define
 
assert_helper
(
x
, 
y
, ...) assert_func(x, y)

#define
 
assert
(
x
, ...) assert_helper((x), ## __VA_ARGS__, #x)

int
 
main
(
int
 
argc
, 
char
 
*
*
argv
) {

 
assert
(
argc
 
>
 
0
);

 
assert
(
argv
[
0
] 
!=
 
0
, 
"argv[0] cannot be null"
);

}