//Purpose: This program reads data for a computer science closed lab section. //

Question

//Purpose:     This program reads data for a computer science  closed lab section.
//  Add a function PrintScores that prints the scores so that each student's labs appear
//  on a separate line of output. Your output should be labeled as follows:
/*    Student 1:  80  90  70  100  60  90  85  78  93  80  70  98  89  94
    Student 2:  98  85 100   99  89  90  72   0  78  98 100  65   0  56
    Student 3:  85  60  25....
    ....  */
//Input:       The first two entries in the input are the number of students
//             in the class and the number of closed labs the class has finished.
//             For each student, their closed labs are input from the
//             following lines of the file.
//
//Limitations: It is assumed that there will be no more than
//             MAX_STUDENTS students in the class and there will be
//             no more than MAX_LABS labs.
        
//include files...
#include <iostream>
       
using namespace std;
       
//global constants...
const int MAX_STUDENTS=40;          //maximum number of students
const int MAX_LABS=14;              //maximum number of closed labs
       
//function prototypes...
//function to read labs from the data file
void ReadScores(int labScores[][MAX_LABS], int& numStudents, int& numLabs);       
//function prototypes for PrintScores
void PrintScores(const int labScores[][MAX_LABS], int numStudents, int numLabs);

int main()
{
   //local declarations...
   int numStudents;                          //how many students are in the class
   int numLabs;                              //how many closed labs
   int labScores[MAX_STUDENTS][MAX_LABS];    //holds lab scores
       
   //read in the data for all students in the class
   ReadScores(labScores, numStudents, numLabs);
       
   //print the data in labScores read using ReadScores
   
              
   //end of main...
   return 0;
}
       
//Function:    ReadScores()
//Purpose:     This function reads data for students in a closed lab class.  
//    Data is read from the standard input. The number of students in the lab
//    and the number of closed labs finished by each student are read first.
//      Next, for each student, their closed labs are read into the 2D array labscores.
//Assumption:  MAX_LABS is a global constant which has been defined
// previously.
void ReadScores(int labScores[][MAX_LABS],  //OUT: Holds the lab scores
                int& numStudents,           //OUT:  # of students
                int& numLabs)               //OUT: Number of Labs       
{
   //local declarations...
   int student;                            //controls which student's labs are read
   int lab;                                //controls which lab is being read
       
   //get the number of students in the class
   cin >> numStudents >> numLabs;
       
   //outer loop controls which student(row) is being read
   for (student = 0; student < numStudents; student++)
   {
      //inner loop controls which lab(column) is being read
      for (lab = 0; lab < numLabs; lab++)
         cin >> labScores[student][lab];
   }
   return;
}
      
//Place the definition of your function to print the scores here
  

Explanation / Answer

#include <iostream>

using namespace std;

//global constants...
const int MAX_STUDENTS=40; //maximum number of students
const int MAX_LABS=14; //maximum number of closed labs

//function prototypes...
//function to read labs from the data file
void ReadScores(int labScores[][MAX_LABS], int& numStudents, int& numLabs);
//function prototypes for PrintScores
void PrintScores(const int labScores[][MAX_LABS], int numStudents, int numLabs);

int main()
{
//local declarations...
int numStudents; //how many students are in the class
int numLabs; //how many closed labs
int labScores[MAX_STUDENTS][MAX_LABS]; //holds lab scores

//read in the data for all students in the class
ReadScores(labScores, numStudents, numLabs);

//print the data in labScores read using ReadScores
PrintScores(labScores,numStudents,numLabs);
  
//end of main...
return 0;
}

//Function: ReadScores()
//Purpose: This function reads data for students in a closed lab class.  
// Data is read from the standard input. The number of students in the lab
// and the number of closed labs finished by each student are read first.
// Next, for each student, their closed labs are read into the 2D array labscores.
//Assumption: MAX_LABS is a global constant which has been defined
// previously.
void ReadScores(int labScores[][MAX_LABS], //OUT: Holds the lab scores
int& numStudents, //OUT: # of students
int& numLabs) //OUT: Number of Labs
{
//local declarations...
int student; //controls which student's labs are read
int lab; //controls which lab is being read

//get the number of students in the class
cin >> numStudents >> numLabs;

//outer loop controls which student(row) is being read
for (student = 0; student < numStudents; student++)
{
//inner loop controls which lab(column) is being read
for (lab = 0; lab < numLabs; lab++)
cin >> labScores[student][lab];
}
return;
}
  
//Place the definition of your function to print the scores here
void PrintScores(const int labScores[][MAX_LABS], int numStudents, int numLabs){
//local declarations...
int student; //controls which student's labs are read
int lab; //controls which lab is being read

//we need to print scores for every student, so outer loop is for students:
for (student = 0; student < numStudents; student++)
{
cout<<"Student "<<(student + 1)<<": ";
//For every student, we need to print the lab scores:
for (lab = 0; lab < numLabs; lab++)
cout<<labScores[student][lab]<<" ";
cout<<endl;
}
}

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.