What is the output of this program?

1.
#include
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using namespace std;
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class stu
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{
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protected:
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int rno;
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public:
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void get_no(int a)
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{
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rno = a;
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}
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void put_no(void)
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{
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}
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};
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class test:public stu
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{
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protected:
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float part1,part2;
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public:
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void get_mark(float x, float y)
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{
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part1 = x;
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part2 = y;
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}
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void put_marks()
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{
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}
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};
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class sports
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{
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protected:
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float score;
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public:
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void getscore(float s)
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{
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score = s;
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}
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void putscore(void)
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{
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}
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};
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class result: public test, public sports
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{
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float total;
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public:
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void display(void);
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};
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void result::display(void)
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{
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total = part1 + part2 + score;
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put_no();
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put_marks();
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putscore();
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cout