json_object_get_int : Get integer value of a json object
json_object_get_int() function is used to get the integer value of a json object. The syntax
int json_object_get_int(struct json_object *);
It takes json_object as a parameter and returns back an integer.
The following program demonstrates this. the function json_parse accepts a json_object with one or more key:integer pairs.
#include <json/json.h>
#include <stdio.h>
void json_parse(json_object * jobj) {
enum json_type type;
json_object_object_foreach(jobj, key, val) {
type = json_object_get_type(val);
switch (type) {
case json_type_int: printf("type: json_type_int, ");
printf("value: %d\n", json_object_get_int(val));
break;
}
}
}
int main() {
char * string = "{ \"colors\" : 7,\
\"continents\" : 7,\
\"oceans\" : 5\
}";
printf ("JSON string: %s\n", string);
json_object * jobj = json_tokener_parse(string);
json_parse(jobj);
}
Let’s compile the program. If you fail any compilation issues, refer the post.
On executing the program, we get the following output
$ ./a.out
JSON string: { "colors" : 7, "continents" : 7, "oceans" : 5 }
type: json_type_int, value: 7
type: json_type_int, value: 7
type: json_type_int, value: 5
As you can see our input to the program was
{
"colors" : 7,
"continents" : 7,
"oceans" : 5
}
with json_object_get_int, we are able to get the integer values.
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Can you highlight an example for the usage of “extern struct array_list* json_object_get_array(struct json_object *obj)”. I need an example where I can get an array from json object
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