So, there is my coding, but i use, loop, and if else, BUT the one suppose is Function...

Code:
#include<iostream.h>
#include<string.h>
int main()
{
    char lect_name[30],subject[30];
    char grade,status;
    int mark;
    int numbof_student;
    float sum=0;
    float average;
    
    cout<<"Enter Your Lecturer name : ";
    cin>>lect_name;
    
    cout<<"Enter Your Subject code : ";
    cin>>subject;
    
    cout<<"Enter Number Of Student : ";
    cin>>numbof_student;
    
    for(int s=0; s<numbof_student; s++)
    {
        cout<<s+1<<" student enter grade:";
        cin>>grade;
        
        if(grade=='A')
        {
        mark=4;
        }
        
        else if(grade=='B')
        {
        mark=3;
        }
        
        else if(grade=='C')
        {
        mark=2;
        }
        
        else if(grade=='D')
        {
        mark=1;
        }
        
        else 
        {
            cout<<"Wrong Input"<<endl;
        }
        sum=sum+mark;

    average=sum/numbof_student;
    
    if ((average>=3.5) &&(average<=4.0))
    {
    cout<<"Excellence";
    }

    else if ((average<=3.0) &&(average<=3.5))
    {
    cout<<"Good";
    }

    else if ((average<=2.0) &&(average<=3.0))
    {
    cout<<"Average";
    }

    else if (average<=2.0)
    {
    cout<<"Poor";
    }
    }

    cout<<"\n\n\t\tUniversiti Pendidikan Sultan Idris";
    cout<<"\n\n\t\tTeaching & Learning Evaluation Report";
    cout<<"\n\nName : "<<lect_name<<endl;
    cout<<"Subject Code : "<<subject<<endl;
    cout<<"Average :"<<average<<endl;
    cout<<"Status : "<<status<<endl;
}
i did coding for function, but blablabla... still error and error and then hard i try the simplest coding...

can sumone?

currently im still working to covert it to function...