C++20 version with std::accumulate. Does not hard-code 5 as # scores per student.

const unsigned NUM_SCORES = 5;
#include <numeric>

class Student {
public:
    void input( vector<int>& scores )
        { scores_ = scores; }
    int calculateTotalScore()
        { return accumulate( scores_.begin(), scores_.end(), 0 ); }
private:
    vector<int> scores_;
};

int main() {
    
    vector<int> scores( NUM_SCORES );
    int q, better=0;
    cin >> q;
    int total[q];
    
    Student s;    
    for( int i=0; i<q; i++ ) {
        for( int j=0; j<NUM_SCORES; j++ ) cin >> scores[j];
        s.input( scores );
        total[i] = s.calculateTotalScore();
    }
    
    for( int i=1; i<q; i++ ) if( total[i]>total[0] ) better++;
    cout << better << endl;
}

• include

• using namespace std;
• class student {
• private:
• int a,b,c,d,e;
• int total;
• public:
• void get_input(){
• cin >> a >> b >> c >> d >> e;
• }
• int calculateTotalScore(){
• total = a + b + c + d + e;
• return total;
• }
• };
• int main() {
• int i,n,count;
• student s;
• cin >> n;
• int a[n];
• for (i = 0 ; i < n ; i++){
• s.get_input();
• a[i] = s.calculateTotalScore();
• }
• for ( i = 1 ; i < n ; i++){
• if(a[0] < a[i])
• count++;
• }
• cout << count << endl;
• }

include

include

include

include

include

using namespace std; class student{ private: int marks,b,gre=0; public: void sum(int n) {b=n; int ar[b]; for(int i=0;i>marks; ar[i]+=marks; } } for(int i=0;i } cout<>n; obj.sum(n); return 0; }

include

include

include

include

include

using namespace std; class student{ private: int marks,b,gre=0; public: void sum(int n) {b=n; int ar[b]; for(int i=0;i>marks; ar[i]+=marks; } } for(int i=0;i } cout<>n; obj.sum(n); return 0; }

include

include

include

include

include

using namespace std;

class Student{ public: int a,b,c,d,e; void input(); int calculateTotalScore();
};

void Student :: input(){ cin>>a>>b>>c>>d>>e; }

int Student :: calculateTotalScore(){ int total = a+b+c+d+e; return total; } int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT / int n; cin>>n; Student S = new Student[n]; S[0].input(); int Kristen = S[0].calculateTotalScore(); int count = 0; for(int i = 1; i < n; i++){ S[i].input(); if(Kristen < S[i].calculateTotalScore()){ count++; } } cout<