Generic programming: Difference between revisions

Revision as of 06:31, 17 August 2025

Latest revision as of 06:37, 17 August 2025

Line 717:

typeof (b) _b = (b); \

_a > _b ? _a : _b; })</syntaxhighlight>

The keyword <code>_Generic</code> is used in C preprocessor macros to automatically match the type of its parameter.

<syntaxhighlight lang="c">

#include <stdio.h>

#define type_of(x) _Generic((x), \

int: "int", \

float: "float", \

double: "double", \

char*: "string", \

default: "unknown")

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

printf("%s\n", type_of(42));

printf("%s\n", type_of(3.14f));

printf("%s\n", type_of(2.718));

printf("%s\n", type_of("hello"));

printf("%s\n", type_of((void *)0));

return 0;

}

</syntaxhighlight>

==See also==