Exercise C++ (do .. While loop)

The following algorithm is designed to determine whether a student grade is “Pass” or “Fail” for a particular subject. There are total of 4 scores (quiz -10%, assignment-10%, mid-term-20%, and final examination – 60%) being used to determine the grade of a student.

Algorithms

Step 1: Input a Student registration number in alphanumerical. (i.e.2015COM12)

Step 2: Input the student’s quiz score in integer.

Step 3: If the quiz score is greater than 10, display “Invalid Input!” and go to Step 2

Step 4: Input the student’s assignment score in integer.

Step 5: If the assignment score is greater than 10, display “Invalid Input!” and go to the Step 4.

Step 6: Input the student’s mid-term exam score in integer.

Step 7: If the mid-term score is greater than 20, display “Invalid Input!” and go to the Step 6.

Step 8: Input the student’s final exam score in integer.

Step 9: If the final exam is greater than 60, output “Invalid Input!” and go to the Step 8.

Step 10: Compute the “Grade”, if the total score (quiz + assignment + mid-term + final) is greater than 55, display the grade as “Pass”. Otherwise “Fail”.

Step 11: Process to student grade, go to step 1.

Step 12: end of program.

Write a C++ code for the above algorithm.

Answer

  #include <iostream>

#include <cstring>

using namespace std;

int main()

{

     int quiz,ass,mid,final,total,x;

     string regnum;

do{

     cout<<"Enter the student registration no:";

     cin>>regnum;

     do {

    cout<<"Enter student Quiz score marks:";

          cin>>quiz;

          if (quiz>10)

          cout<<"Invalid input"<<endl;

    }while(quiz>10);

 

     do {

    cout<<"Enter student Assignment score marks:";

          cin>>ass;

          if (ass>10)

          cout<<"Invalid input"<<endl;

    }while(ass>10);

 

     do {

    cout<<"Enter student Mid tearm score:";

          cin>>mid;

          if (mid>20)

          cout<<"Invalid input"<<endl;

    }while(mid>20);

 

     do {

    cout<<"Enter student final score:";

          cin>>final;

          if (final>60)

          cout<<"Invalid input"<<endl;

    }while(final>60);

 

     total=quiz+ass+mid+final;

 

     if(total>55)

          cout<<"Grade is Pass";

     else

          cout<<"Grade is Fail";

 

     cout<<endl<<"whould you like to enter another student marks (Yes=1, No=0):";

     cin>>x;

    

}while(x==1);

return 0;

}