Question

Suppose a teacher weights the four
exams he gives 10%, 25%, 30%, and 35%. Write a
program that reads ten sets of four grades.
i just need an explaination on how I would write the code to read ten sets of four grades. It is also supposed to be a global variable
I need an in-depth explanation on how to write the program not the code it self.

Answer 1

you can take a two dimentional array 10 x 4
and you an save elements in that array
now
for 1st grade marks = first grade marks * 0.10
for second grade marks = second grade marks * 0.25
and others same like this

Answer 2

@nick67
do you know how to do this program this is what i have so far
#include<iostream>
using namespace std;
const int NUMVALUES=5;
int main()
{
int Test1, Test2, Test3, Test4, sum, i, number;
sum=0;
for(i=1;i<=number;i++)
{
cout<<"enter a value"<<endl;
cin>>Test1>>Test2>>Test3>>Test4;
sum=sum+Test1+Test2+Test3+Test4;
cout<<"the average is "<<sum/NUMVALUES<<endl;
}
}

Answer 3

@Jas11
You may follow the indication by xaadi1993 over here, in order to save data into a multidimensional array; you could "write the code to read ten sets of four grades" using two nested loops: the outer one with length 10 (the number of students, I suppose) and the inner one with length 4 (the grades each student received in the four exams).
Hope this could be useful :-)

Answer 4

@nick67
am i on the right track
#include<iostream>
using namespace std;
const int NUMVALUES=10
int main()
{
sum=0;
int i;
double number;
float marks[10][4]={0};
cout<<"enter the valuse of the four letter grades"<<endl;
for(i=1;i<=10;i++)

Answer 5

well, you need another loop into the first one; so use another for cycle that runs from 1 to 4, then in that loop write the input instruction (cin>>) to fill the matrix "marks" , using proper indexes to point to the correct position in the matrix.

Answer 6

@nick67
like this
#include<iostream>
using namespace std;
const int NUMVALUES=10;
int main()
{
sum=0;
int i;
double number;
float value[10][4]={0};
int t1,t2,t3,t4;
cout<<"enter the valuse of the four letter grades"<<endl;
for(i=1;i<=10;i++)
{
for(i=0;i<=4;i++)
{
cout<<"enter the value of the test scores"<<endl;
cin>>t1<<t2<<t3<<t4;
sum=sum+number;
cout<<"the average is "<<sum/NUMVALUES<<endl;
}
}
return 0;
}

Answer 7

@Jas11

sorry Jas11, but you need 2 different variables for the 2 for cycles (i, j for instance) and then you have to fill the matrix using something like that:
#include <iostream>
using namespace std;

int main() {
int marks[10][4];
int i, j;

for(i=0; i<10; i++)
for(j=0; j<4; j++)
{
cout << "Type mark " << j+1 << " for student n° " << i+1;
cin >> marks[i][j];
}

return 0;
}

Now you have to elaborate data in the matrix :-)

Answer 8

ok