Question

c++ programming

1. What will the following C++ code display?

int numbers[4]={99,87};

cout<<numbers[3]<<endl;

1. 87                            b. 0                                  c. garbage                        d. an error

2. What is the output of the following program segment?

double mylist[5];

for(int i=0; i<5; i++)

mylist[i]= (pow(i,2)+ 1 /2.0;

cout<<fixed<<showpoint<<setprecision(2);

for(int i=0; i<5; i++)

{ cout<<setw(5)<<mylist[i];

}

              a. .5           1.5        4.5        9.5        16.5

              b. 0.50      1.50      4.50      9.50     16.50

             c. 0.50      1.50      8.50     27.50     64.50

            d. 0.50      1.50      2.50      3.50      4.50

     15. what is stored in list after the following C++ statement is executed?

     int list [8];

list[0]=1;

list[1]=2;

for(int i=2; i<7; i++)

{

     list[i]= list[i-1] * list[i-2];

     cout<<setw(5)<<list[i];

}

1. 2    4    8   16   32          b. 2    4    8   16 256         c. 2    4    8   64 256        d. 2    4    8   32 256

16. What is the output of the following C++ segment?

      int i;

int list [8];

list[0]=1;

list[1]=2;

for(int i=2; i<7; i++)

{

     list[i]= list[i-1] * list[i-2];

     cout<<setw(5)<<list[i];

}

for(int i=2; i<7; i++)

{

if( i>3)

    list[i]= list[i]- list[i-1];

cout<<setw(5)<<list[i];

}   

    a.    2    4    16   32 256    2    4    8   28   228      b. 2    4    4   16 256    2    4    4   28      228

   c. 2    4    8   32       256     2     2    4   28 228      d. 2    4    8   32 256    2    4    4   28     228

Given int numbers[]= { 12,145,567,100,1001};

17. Write a function to indicate the position of the highest data?
18. Write a function to determine the maximum value of the numbers [];

Given:

struct nameType { string first_name;   string last_Name;      string middle_Name;   };

struct addressType { string address; string city; string state; string zip; };

struct courseType { string course_Name; int course_number; string major; };

struct dateType { int month; int day; int year;   };

struct studentType { nameType name; int student_ID; addressType address; dateType enrolled;};

19. How many of the following are invalid ?

studentType student;

studentType array[89];

courseType course;

nameType name;

student.gpa=4.0;

student.name.first_name="Robert";

student.course.course_Name="Chem";

array[0].enrolled=student.enrolled;

array[1].name.first_name="Jane";

1. 1                                        b. 3                             c. 2.                                  d. none

20. How of the following statements are invalid ?

studentType student;

studentType array[89];

courseType course;

nameType name;

student.gpa=4.0;

student.name="Robert";

student.course.="Chem";

array[0].enrolled=student.enrolled;

array[1].name.first_name="Jane";

1. 1                                     b. 3                                  c. 2                                   d. none

Answer 1

Question 1:

   int numbers[4] = {99,87};
   cout<<numbers[3]<<endl;

   As numbers[3] is not set so it will 0.
   ans: option B
   0

Question 2:

   double mylist[5];
   for(int i=0; i<5; i++)
   {
       mylist[i]= (pow(i,2)+ 1 /2.0);
       when any of the divisor or dividend is float then division is complete division.
       1st loop i=0 mylist[0] = 0 + 1/2.0 = 0.50
       2nd loop i=1 mylist[1] = 1 + 1/2.0 = 1.50
       3rd loop i=2 mylist[2] = 2 power 2 + 1/2.0 = 4 + 1.50 = 4.50
       4th loop i=3 mylist[3] = 3 power 2 + 1/2.0 = 9.50
       5th loop i=4 mylist[4] = 4 power 2 + 1/2.0 = 16.50  
   }

   ans: option b
   0.50 1.50 4.50 9.50 16.50
  
Question 3:

   ans: option d
   2 4 8 32 256
  
Question 4:

   ans: option d
   d. 2 4 8 32 256 2 4 4 28 228
  
Question 5:
  

#include<bits/stdc++.h>
using namespace std;
int highest(int arr[], int n) 
{ 
    int i; 
    int max = arr[0];  
    for (i = 1; i < n; i++) 
        if (arr[i] > max) 
            max = arr[i]; 
    return max; 
} 
int main()
{
    int numbers[]= { 12,145,567,100,1001};
    int n = sizeof(numbers) / sizeof(numbers[0]); 
    cout << "Largest element given array is "<< highest(numbers, n);
    return 0; 
}

Output: