In c programming, i would like to use typedef struct to input the data of each visitor.(Eg, visitor1's name ,id, arrival, key, night price). I wanted to input those data with scanf but it doesn't work. Besides, another structure "updated" is used for renew the key, night,breakfast , and price.If one of them are updated. Thanks!

#include typedef struct _visitor char *name; char *id; int arrival; int key int night; int price; Ivisitori struct visitor update (struct visitor,int a,int b); int main() int noofvisitor,i,*p; visitor a= { "ali", "A123", 180118, 1,1,1): p &b.key: printf("no of visitors:"); scanf ("%d", &noofvisitor) ; print f("%s %s %d %d %d %d ", a. name, a.id, a. arrival, a .key, a. night, a . price); scanf ("name of visitor b: %d","p); print f ('' name of visitor b: %s",b.name)