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-Write C program to find even and odd number using macro

-Write C program to find even and odd number using macro #include<stdio.h> #define number(n)((n%2==0)?1:0) int main() { int num; printf("enter any number"); scanf("%d",&num); if(number(num)) printf("number is even"); else printf("number is odd"); return 0; } ***************************Output*********************** amr@amrj-virtual-machine:~$ gccevenodd.c amr@samr-virtual-machine:~$ ./a.out enter any number 2 number is evensmj@amr-virtual-machine:~$
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Unhandled Exception: FormatException: Invalid radix-10 number (at character 1) E/flutter (23894): null

  Unhandled Exception: FormatException: Invalid radix-10 number (at character 1)

E/flutter (23894): null

this Errro showing beacuse you not parsing  json parsing.

for json Parsing: - dart variable like char, double or int another json parsing like below showing here
Ex: - int.parse(json['demo'].toString);
just like parse the in the model class in flutter 

Solution:

  if (json['minimum_order_qty'] != null) {
      _minimumOrderQty = int.parse(json['minimum_order_qty'].toString());
    }

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