C++ exercises and solutions: C++ operators (con)

C++ operators (con)

1. Write a C++ program to generate the results as shown below:

Results: =======Quizzes===============
Enter the score of the first quiz: 90
Enter the score of the second quiz: 75
Enter the score of the third quiz: 91
=======Mid-term==============
Enter the score of the mid-term: 80
=======Final=================
Enter the score of the final: 89
Quiz Total:      256
Mid-term :       80
Final        :       89
……………………
Total:               425

Solution:

#include <cstdlib>
#include <iostream>
#include<iomanip>
using namespace std;
int main(int argc, char *argv[])
{
    float q1;
    float q2;
    float q3;
    float qtotal;
    float midterm;
    float final;
    float total;
    cout<<"==========QUIZZES================\n";
    cout<<"Enter the score of the first quizz:";
    cin>>q1;
    cout<<"\n";
    cout<<"Enter the score of the second quizz:";
    cin>>q2;
    cout<<"\n";
    cout<<"Enter the score of the third quizz:";
    cin>>q3;
    cout<<"\n";
    cout<<"==========MID-TERM==============\n";
    cout<<"Enter the score of the mid-term:";
    cin>>midterm;
    cout<<"\n";
    cout<<"===========FINAL================\n";
    cout<<"Enter the score of the final:";
    cin>>final;
    cout<<"\n";
    qtotal=q1+q2+q3;
    total=qtotal+midterm+final;
    cout<<"Quizz Total:"<<right<<setw(5)<<qtotal;
    cout<<"\n";
    cout<<"Mid term:"<<right<<setw(7)<<midterm;
    cout<<"\n";
    cout<<"Final:"<<right<<setw(10)<<final;
    cout<<"\n";
    cout<<".................................\n";
    cout<<"Total:"<<right<<setw(11)<<total;
    cout<<"\n";
    system("PAUSE");
    return EXIT_SUCCESS;
}

2. Given the following pseudo code, write a program that executes it.

a. read x b. read y c. compute p=x*y d. compute s=x+y e. total=s²+p*(s-x)*(p+y) f. print total

Solution:

#include <cstdlib>
#include <iostream>
#include<iomanip>

using namespace std;

int main(int argc, char *argv[])
{
    float x;
    float y;
    float p;
    float s;
    float total;
    cout<<"Enter x value:";
    cin>>x;
    cout<<"\n";
    cout<<"Enter y value:";
    cin>>y;
    cout<<"\n";
    p=x*y;
    s=x+y;
    total=s*s+p*(s-x)*(p+y);
    cout<<"Total:"<<total;
    cout<<"\n";

    system("PAUSE");
    return EXIT_SUCCESS;
}

Comments

Sumon

The solution of this problem is .....

#include <iostream>
using namespace std;
int main()
{
int q1,q2,q3,mid_term,final_term,final,total;

cout << "Enter your score of first quiz : "<< endl;
cin >> q1;

cout << "Enter your score of seacond quiz :" << endl;
cin >> q2;
cout << "Enter your score of third quiz : "<< endl;
cin >> q3;
cout << "Enter your score of the mid term marks :"<< endl;
cin >> mid_term;
cout << "Enter your score of the final marks : "<< endl;
cin>> final;

cout << "Quiz Total : " << q1+q2+q3 <<endl;
cout << "Mid term : " << mid_term <<endl;
cout << "Final : " << final << endl;
cout << "Total : " << q1+q2+q3+mid_term+final<< endl;

return 0;

2017-05-28

ashutosh.raja94@gmail.com

solution to the first problem

#include <iostream>

using namespace std;
int main()
{
int q1,q2,q3,mid ;
cout<<"**********quiz***************"<<endl;
cout<<"enter the score of quiz one ="<<endl;
cin>>q1;
cout<<"enter the score of quiz two ="<<endl;
cin>>q2;
cout<<"enter the score of quiz three ="<<endl;
cin>>q3;
cout<<"**********mid term ***************"<<endl;
cout<<"enter the score of midterm ="<<endl;
cin>>mid;
cout<<"**********total***************"<<endl;
cout<<"total of quiz score "<<q1+q2+q3<<endl;
cout<<" mid term total "<<mid<<endl;
cout<<"grand total "<<q1+q2+q3+mid<<endl;
return 0;
}

2017-03-17

Aqeel

Its a pre-processor directive and also a library that is used to use the setw(n) function...

2015-09-18

Bassam

i believe it is a library that contains functions as setw() that is used in the code for excercise 1.

2015-06-21

Humza

What is #include<iomanip>

2015-06-04