c++ problem

//knjiznice
#include <iostream>	
#include <stdlib.h> 
#include <string> 
#include<conio.h>
#include<iomanip>
using namespace std; 



void stevilo_studentov(int grade[][3], double st_ave[])
{
	for (int i = 1; i <= 3; i++)
	{
		double sum = 0;
		for (int j = 1; j <= 4; j++)
			sum = sum + grade[i - 1][j - 1];
		st_ave[i - 1] = sum / 3;

	}
}

void sestevek_kvizov(int grade[][3], double quiz_ave[])
{
	for (int j = 1; j <= 4; j++)
	{
		double sum = 0;
		for (int i = 1; i <= 3; i++)
			sum = sum + grade[i - 1][j - 1];
		quiz_ave[j - 1] = sum / 4;



	}
}

void prikazi(int grade[][3],double st_Ave[],double quiz_Ave[])
{
	using namespace std;
	cout.setf(ios::fixed);
	cout.setf(ios::showpoint);
	cout.precision(1);
	cout << setw(10) << "student"
		<< setw(5) << "  povprecje"
		<< setw(15) << "kvizi\n";
	for (int i = 1; i <= 4; i++)
	{
		cout << setw(10) << i
			<< setw(5) << st_Ave[i - 1] << " ";
		for (int j = 1; j <= 3; j++)
			cout << setw(5) << grade[i - 1][j - 1];
		cout << endl;
	}
	cout << "povprecje kvizov =";
	for (int j = 1; j <= 3; j++)
		cout << setw(5) << quiz_Ave[j - 1];


}
int main()
{
	int grade[4][3];
	double stAve[4] = { 1, 2, 3, 4 };
	double quizAve[3] = { 70, 80, 90 };
	stevilo_studentov(grade, stAve);
	sestevek_kvizov(grade, quizAve);
	prikazi(grade, stAve, quizAve);

	


	system("pause")
	return 0;
}

//knjiznice
#include <iostream>	
#include <stdlib.h> 
#include <string> 
#include<conio.h>
#include<iomanip>
using namespace std; 



void stevilo_studentov(int grade[][3], double st_ave[])
{
	for (int i = 1; i <= 3; i++)
	{
		double sum = 0;
		for (int j = 1; j <= 4; j++)
			sum = sum + grade[i - 1][j - 1];
		st_ave[i - 1] = sum / 3;

	}
}

void sestevek_kvizov(int grade[][3], double quiz_ave[])
{
	for (int j = 1; j <= 4; j++)
	{
		double sum = 0;
		for (int i = 1; i <= 3; i++)
			sum = sum + grade[i - 1][j - 1];
		quiz_ave[j - 1] = sum / 4;



	}
}

void prikazi(int grade[][3],double st_Ave[],double quiz_Ave[])
{
	using namespace std;
	cout.setf(ios::fixed);
	cout.setf(ios::showpoint);
	cout.precision(1);
	cout << setw(10) << "student"
		<< setw(5) << " povprecje"
		<< setw(15) << "kvizi\n";
	for (int i = 1; i <= 4; i++)
	{
		cout << setw(10) << i
			<< setw(5) << st_Ave[i - 1] << " ";
		for (int j = 1; j <= 3; j++)
			cout << setw(5) << grade[i - 1][j - 1];
		cout << endl;
	}
	cout << "povprecje kvizov =";
	for (int j = 1; j <= 3; j++)
		cout << setw(5) << quiz_Ave[j - 1];


}
int main()
{
	int grade[4][3] = 
	{
		{10,10,10},
		{2,0,1},
		{8,6,9},
		{8,4,10}
	};
	
	
	double stAve[4];
	double quizAve[3];
	stevilo_studentov(grade, stAve);
	sestevek_kvizov(grade, quizAve);
	prikazi(grade, stAve, quizAve);

	


	system("pause");
	return 0;
}