#include <stdio.h>
#include<string.h>
struct address {
    char city[30];
    int pincode;
};
struct student {
    int roll;
    char name[30];
    struct address addr;
};
int main() {
 struct student s1;
 s1.roll=101;
 strcpy(s1.name,"rithiga");
 strcpy(s1.addr.city,"chennai");
 s1.addr.pincode=600001;
 printf("Roll:%d\n",s1.roll);
 printf("Roll:%s\n",s1.name);
 printf("Roll:%s\n",s1.addr,city);
 printf("Roll:%d\n",s1.addr,pincode);
 
return 0;
}