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Answer to Question #57656 in C++ for Kalyan

Question #57656
Define structure for the following:-
(a)Roll number,Name,Marks.
(b)Day,Month,Year.
Expert's answer
#include<string>
#include<vector>
#include<cinttypes>
#include<iostream>
using namespace std;
typedef int marks_t;
/* a) */
struct person {
string roll_number;
struct name_t {
string first,second;
string full() const {
return first+(first.empty()?"":" ")+second;
}
} name;
vector<marks_t> marks;
};
ostream& operator<<(ostream& o,const person&j) {
o << "Roll №: " << j.roll_number << endl
<< "Name: " << j.name.full() << endl;
o << "Marks: ";
for(size_t i=0;i<j.marks.size();++i)
o << j.marks[i] << " ";
o << endl;
return o;
}
/* b) */
struct date {
uint8_t day;
uint8_t month;
uint16_t year;
};
int main() {
person p;
p.roll_number = "A1S2D3F4";
p.name.first = "GF";
p.name.second = "Expert";
marks_t m[]{1,2,3,4,5};
p.marks = vector<marks_t>(m,m+sizeof(m)/sizeof(marks_t));
cout << p;
return 0;
}

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