ceph/src/jaegertracing/opentelemetry-cpp/third_party/prometheus-cpp/3rdparty/civetweb/src/third_party/duktape-1.5.2/examples/hello/hello.c

   1 /*
   2  *  Very simple example program
   3  */
   4
   5 #include "duktape.h"
   6
   7 int adder(duk_context *ctx) {
   8         int i;
   9         int n = duk_get_top(ctx);  /* #args */
  10         double res = 0.0;
  11
  12         for (i = 0; i < n; i++) {
  13                 res += duk_to_number(ctx, i);
  14         }
  15
  16         duk_push_number(ctx, res);
  17         return 1;  /* one return value */
  18 }
  19
  20 int main(int argc, char *argv[]) {
  21         duk_context *ctx = duk_create_heap_default();
  22
  23         (void) argc; (void) argv;  /* suppress warning */
  24
  25         duk_eval_string(ctx, "print('Hello world!');");
  26
  27         duk_push_global_object(ctx);
  28         duk_push_c_function(ctx, adder, DUK_VARARGS);
  29         duk_put_prop_string(ctx, -2, "adder");
  30         duk_pop(ctx);  /* pop global */
  31
  32         duk_eval_string(ctx, "print('2+3=' + adder(2, 3));");
  33         duk_pop(ctx);  /* pop eval result */
  34
  35         duk_destroy_heap(ctx);
  36
  37         return 0;
  38 }