what error??

[jt1991]

xD xD

[Disch]

with the assignment operator =

[jt1991]

struct student
{
   int snum;
   float exam;
   float quiz;
   float progass;
   float labex;
   float test;
};


for(i = 0; i < sentinel; i++)
    {
          cout << "Student Number >> ";
          cin >> (WHAT SHOULD I ENTER HERE TO ASSIGN THE VALUE snum???) >> endl;

[buffbill]

snum. The user will then enter the int value which snum will then hold.

[Zhuge]

See the section on how to access members. It's worth nothing you can't just modify snum; you need to create an instance of student and modify it's snum.

http://www.cplusplus.com/doc/tutorial/structures/

[jt1991]

buffbill: what command i should enter there so that the prog will prompt me to enter the number...

zhuge: i already browse that site many time still don't understand.. i even copy and paste the program and just edit the variable but still error keep coming out. The original had no error but when i just edit the name of variable ONLY error came out..

[imi]

Normally, you'd assign values to basic data types like "int", right? So for example, this would assign something to an integer variable called "stud_snum"

          int stud_snum; // here you say, that you have a variable "stud_snum" of an number type
          cout << "Student Number >> ";
          cin >> stud_snum >> endl;

so far so good. But if you got more than one variable that all are somehow should be kept together, like "stud_snum", "stud_exam", "stud_quiz" and so on... this gets confusing really quickly.

          int stud_snum;
          int stud_exam;
          int stud_quiz; // woah.. this is not very comfertable
          cout << "Student Number >> ";
          cin >> stud_snum >> endl;
          ...

So you introduce a new type that you can use instead of "just a number". This is your "struct student". But this is only a type like "int". It's not a variable.

This means, you also need to declare a variable of the new type. Just like you declared "stud_snum"

struct student
{
   int snum; // here you say what numbers belong to every "student"
   float exam;
   float quiz;
...
};
...
          student stud; // here you have a student variable called "stud". Within the student are all the numbers
          cout << "Student Number >> ";
          cin >> stud.snum >> endl; // here you say that you want to use the number "snum" from the student
          ...

Ciao, Imi.

[sundhu]

#define SIZE 10
struct student
{
int snum;
float exam;
float quiz;
float progass;
float labex;
float test;
};

int main()
{
int i =0;
struct student stuArray[SIZE];

for(i=0;i<SIZE;i++)
{
cout << "Enter student number: ";
cin >> stuArray[i].snum;
cout << "Enter exam code :";
...
.....
}

for(i=0;i<SIZE;i++)
{
cout << stuArray[i].snum;
..
....
}
return 0;
}

[jt1991]

yo dude i know what's im wrong.. after the cin process i go add endl at the end.. =.= no wonder error keep on poping out. thanks for your all advice

[jt1991]

errm i am suppose to enter the marks for students inside an array of structure and total their marks and assign grade to it..

#include<iostream>
#include<iomanip>
using namespace std;

void cal();
void grade();

const int sentinel = 1000;

struct student
{
   int snum;
   float exam;
   float quiz;
   float progass;
   float labex;
   float test;
};

int main()
{
    int i,count = 0;
    float rslt;
    char a,y;
    struct student result[sentinel];

    for(i = 0; i < sentinel; i++)
    {    
          cout << "\nEnter Y/y to enter the data entries or N/n to terminate the data entries " ;
          cin >> a;
          if (a == 'N' || a == 'n' )
          break;
          else if (a == 'y' || a == 'Y')
          cout << "Student Number: ";
          cin >> result[i].snum;
          cout << "==================================================================" << endl;
          cout << "Marks for exam is ";
          cin >> result[i].exam;
          cout << "Marks for quiz is ";
          cin >> result[i].quiz;
          cout << "Marks for programming assignment is ";
          cin >> result[i].progass;
          cout << "Marks for lab exercise is ";
          cin >> result[i].labex;
          cout << "Marks for test is ";
          cin >> result[i].test;
          void cal();
          void grade();
          count++;
    }
    cout << setiosflags(ios::left);
    for(i = 0; i < count; i++)
    {
      cout << setw(7) << result[i].snum
           << setw(3) << result[i].exam
           << setw(3) << result[i].quiz
           << setw(3) << result[i].progass
           << setw(3) << result[i].labex
           << setw(3) << result[i].test
           << endl;
    }   
           
    
    
    
    
    
    system("pause");
    return 0;
}

void cal()
{    
     int i;
     float rslt;
     struct student result[sentinel];
     const float E = 0.6, Q = 0.1, PG = 0.1, LE = 0.1, T = 0.1;
     rslt = (result[i].exam*E)+(result[i].quiz*Q)+(result[i].progass*PG)+(result[i].labex*LE)+(result[i].test*T);
     return ;
}



void grade()
{    
     float rslt;
     int i;
     for(i = 0; i < 100; i++)
     {
        if (i>=80.0 || i<=100)
        cout << "Final Score is >> " << rslt << "\nGrade is A " << endl;
        else if (i>=70 || i<=79.9)
        cout << "Final Score is >> " << rslt << "\nGrade is B " << endl;
        else if (i>=60 || i<=69.9)
        cout << "Final Score is >> " << rslt << "\nGrade is C " << endl;
        else if (i>=50 || i<=59.9)
        cout << "Final Score is >> " << rslt << "\nGrade is D " << endl;
        else if (i>=0 || i<=49.9)
        cout << "Final Score is >> " << rslt << "\nGrade is F " << endl;
     }
     return;
}

The point is.. my fuction to calculate and output the grade and final score is not working.. can anybody help???

final score = exam*0.6 + quiz*0.1 + prog*0.1 + lab*0.1 + test*0.1 which will result the score to determine the grade

[MondO]

Hi jt1991, I have a solution for you, please accept private messages and I can give it to you!
// MondO

[chrisname]

Two things about this thread that irritate me a lot:
1. OP deleting [the contents of] his post and replacing it with meaningless rubbish, meaning that no-one else with the same error he had can not find this thread and end their problem
2.

Hi jt1991, I have a solution for you, please accept private messages and I can give it to you!

Please do not give people solutions. Besides that, OP almost has it right.