1. Write a c++ program .to prompt the user to enter the length of a shape and th

Question

1. Write a c++ program .to prompt the user to enter the length of a shape and the height of that same shape . Next, prompt the user to enter the type of shape they would like to calculate the area of: a rectangle have them enter a character R) or a triangle(have them enter a character T) . Using an if structure, call a function caled AreaRect if the user entered R. AeaRect should accept two inputs(length and height) and should return the area to main .Else Call a function called AreaTri, AreaTri should accept two inputs(length and height) and should return the area to main. Using a second if structure, print "the area of the rectangle is %lf" if the user entered R Else print "the area of the triangle is %lf" . Run with sample data: h-43, 1-64, shape-T and h=3.7,7.2, shape-R Write a ctt program to calculate a student's grade based on three test scores, using the guidelines below: 2. Write a function readScores and call it three times to read three test scores (between 0 and 100 using data type float for the scores. Call a function calculateGrade to determine the student's grade from the three test scores using the algorithm below. The function calculateGrade receives the three scores and returns the grade as a character. Implement the algorithm using nested statements within a given range rather than merely simple if statements. The grade is not printed from this function. These are the guidelines: * - If the average score is 90% or more, the grade is A. If the average score is 70% or more and less than 90%, check the third score. If the third score is more than 90%, the grade is A, otherwise the grade is B If the average score is 50% or more and less than 70%, check the average of the second and third scores. If the average of the two is greater than 70%, the grade is C; otherwise the grade is D If the average score is less than 50% then the grade is F o Print the student's grade from function main (or if you prefer, from a printResults function) . Test with the following sets of scores: a.. Test 1 score: 74 b. Test 1 score: 62 Test 2 score: 82 Test 2 score: 84 Test 2 score: 64 Test 3 score: 92 Test 3 score: 73 Test 3 score: 85 C Test 1 score: 52

Explanation / Answer

#include <iostream> // Header file for basic input and uotput operations

using namespace std;

//Declaration of function
float AreaRec(float , float); // To calculate area of rectangle
float AreaTri (float, float);   // To calculate area of traingle

int main ()
{
   char shape; // for taking input whether traingle or rectangle
   float lenght, height; // declaring ltenght and height

   cout<<"Enter the height of the shape: ";
   cin>>height;
   cout<<"Enter the Lenght of the shape: ";
   cin>>lenght;

   cout<<" Enter the shape of the object R for rectangle and T for triangle: ";
   cin>>shape; // inputing shape

   if (shape == 'T') // checkinf if input is T or R
       cout<<" Area of triangle is: " << AreaTri(height,lenght);

   else if (shape == 'R')
       cout<<" Area of triangle is: " <<AreaRec(height,lenght);
  
   else // if input is other than T and R it will show appropriate messge and terminate
   {
       cout<<"You have entered wrong Choice: "<< shape << " Please see options";
       cout<<"Exiting program";
       return 0;
   }
cout<<endl;
}

// DEfination of functions
float AreaRec(float ht, float len)
{
   return (len*ht); // calculating and returning area of rectrangle
}

float AreaTri( float ht, float len)
{
   return ((ht*len)/2); // calculating and returning area of traingle
}

//Output of the code

dps@Machine:~/Documents/C++$ ./area
Enter the height of the shape: 4.3
Enter the Lenght of the shape: 6.4

Enter the shape of the object
R for rectangle and
T for triangle: T

Area of triangle is: 13.76
dps@Machine:~/Documents/C++$ ./area
Enter the height of the shape: 3.7
Enter the Lenght of the shape: 7.2

Enter the shape of the object
R for rectangle and
T for triangle: R

Area of triangle is: 26.64

//Question 2

#include <iostream> //for basic input output

using namespace std;

// function to input scores
float readScores (){
   float score;
   cout<<"Enter the scores of test (0-100): ";
   cin>>score;
   return (score);
}

//function to calculate grades
char calculateGrade ( float first, float second, float third) {

   float per = (((first+second+third)/3)); // declaring and calculating average
  
   // comapring marks and returning equailant grade
   if (per >= 90)
       return('A');
   else if (per >=70){ // Nested If else
       if (third > 90)
           return ('A');
       else
           return ('B');
   }

   else if (per >=50){
       int avg= ((second+third)/2);
       if ( avg > 70 )
           return ('C');
       else
           return ('D');
   }

   else if (per < 50 )
       return 'F';

}

// FUnction for printing
void printResults (float first, float second, float third, char grade )
{
   cout<<" Test 1 Score: "<<first <<" Test 2 score: "<<second <<" Test 3 score: "<<third;
   cout<<" The GRADE for your marks is: "<<grade;
   cout<<endl;

}

int main ()
{
   float one, two, three; // declaring 3 variables to store values
  
   // Readdin and storing values
  >    two =readScores();
   three = readScores();

   // storing values in variable
   char grade= calculateGrade(one, two, three);

   // calling print function
   printResults(one, two, three, grade );
  
   return 0;
}

//output of the code

dps@Machine:~/Documents/C++$ ./grade
Enter the scores of test (0-100): 74
Enter the scores of test (0-100): 82
Enter the scores of test (0-100): 92

Test 1 Score: 74    Test 2 score: 82   Test 3 score: 92
The GRADE for your marks is: A
dps@Machine:~/Documents/C++$ ./grade
Enter the scores of test (0-100): 62
Enter the scores of test (0-100): 84
Enter the scores of test (0-100): 73

Test 1 Score: 62    Test 2 score: 84   Test 3 score: 73
The GRADE for your marks is: B
dps@Machine:~/Documents/C++$ ./grade
Enter the scores of test (0-100): 52
Enter the scores of test (0-100): 64
Enter the scores of test (0-100): 85

Test 1 Score: 52    Test 2 score: 64   Test 3 score: 85
The GRADE for your marks is: C

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