‫جامعة البلقاء التطبيقية‬
‫كلية الحصن الجامعية‬
‫قسم تكنولوجيا المعلومات‬
Al- Balqa Applied University
Al-huson University College
Dept. of Information Technology
First Exam of Programming Language (C++)
Name : -------------------------------------Date : 28/10/2014
Number : ----------------------------------Instructor: ------------------------Q1)[10 marks] Solve the following 10 Multiple Choice Questions:
Q#
1
2
3
4
5
6
7
8
9
10
Sol.
A
C
B
B
C
D
B
D
A
C
1.
The result of the following code segment is :
int x2=5, y=3;
int z= x2 + y *(4-x2%y+1);
cout<< "the value of z="<<z<<endl;
A
B
2.
the value of z=14
the value of z=5
A
B
3.
8
C 7
6
D 5
The result of the following code segment is :
int x= 2;
int y;
// x=x*2;
y= x++;
cout << "X=" << x << "\t y=" << y;
X=4
y=5
C X=4
X=3
y=2
D X=5
The result of the following code segment is :
int x=3;
switch (x++)
{
case 1: cout<<'A' << " "; break;
case 2: cout<<"AA"<<" "; break;
case 3: cout<<"AAA"<<" ";
default: cout<<"AAAA"<<endl;
}
A AA AAA AAAA
C AAA
AAA AAAA
D AA
A
B
4.
A
B
C the value of z=11
D the value of z=12
The result of the following code segment is :
int x=7 ;
if( x=8 ) cout<<x-1;
else
cout<<x+1;
y=4
y=4
5.
The result of the following code segment is :
cout<<"This Exam is\r very easy"<<endl;
A
B
6.
A
B
7.
C very easyis
D Exam very easy
The result of the following code segment is :
int x=1,y=2;
cout<<++x<<endl;
cout<<y--<<'\t'<<x++<<endl;
cout<<++x-y<<endl;
2
C 1
1
2
2
1
2
3
This Exam is\r very easy
very easy
2
1
2
D
3
2
2
3
2
The result of the following code segment is :
int x = 2;
int y = 0;
for ( ; y < 10; ++y)
{
if (y % x == 0)
continue;
else if (y == 8)
break;
else
cout<<y ;
}
A
B
8.
8
C 0
13579
D 02468
The result of the following code segment is :
int num = 100;
while (num <= 150)
num = num + 5;
cout << num << endl;
A
B
9.
A
B
150
C 160
165
D 155
Suppose j, sum, and num are int variables, and the input is 26 34 61 4 -1. What
is the output of the code?
sum = 0;
cin >> num;
for (int j = 1; j <= 4; j++)
{
sum = sum + num;
cin >> num;
}
cout << sum << endl;
125
124
C
D
126
122
10.
The result of the following code segment is :
for(int i=0;i<=5;i++){
for(int j=5;j>i;j--)
cout<<"$";
cout<<endl;}
A
C
$$$$$
$$$$$
$$$$$
$$$$$
$$$$$
$
$$
$$$
$$$$
$$$$$
B
D
$$$$$
$$$$
$$$
$$
$
None of them
Q2) [2 marks] Convert the following code written using if .... then structure into switch case
statements:
If structure
int x;
cin>>x;
if ((x>=0) &&(x<=2))
cout<<"This course is C++\n";
else if (x<=4)
cout<<"This collage is HUC \n";
else
cout<<"This University is BAU \n";
Switch case structure
int x;
cin>>x;
switch (x)
{
case 0:
case 1:
case 2: cout<<"This course is C++\n"; break;
case 3:
case 4: cout<<"This collage is HUC \n";
break;
default: cout<<"This University is BAU \n";
}
Q3) [3 marks] find the syntax error and the logical error in the following C++ code:
Line
#
1
Statements
Error
correction
int x==5;
== (wrong assignment
operator)
int x=5;
2
float 5x;
5x (wrong name of
identifier)
x5
3
for(int i=100; i >0;i++)
cout<<i<<endl;
Logical error (infinite
loop)
for(int i=100; i
>0;i--)
4
if (x=5)
cout<<++x;
int x$=3.5;
Logical error (x=5)
not logical operator
2 errors : 1- x$ (wrong
if (x==5)
cout<<++x;
5
1- x
6
int x=1;
while (x<10);
{
x++ ;
cout<<x<<endl;
}
name of identifier)
2- wrong value to the int
X$=3.5;
Logical error (infinite
loop)
Semicolon after while
statement
2- x=3;
int x=1;
while (x<10)
{
x++ ;
cout<<x<<endl;
}
Q4)[3 marks] Write C++ program to calculate the value of y where
𝑥2
𝑦 = { 2𝑥
−𝑥
𝑥=1
𝑥 = 100 }
𝑜𝑡ℎ𝑒𝑟𝑤𝑖𝑠𝑒
[Hint: use switch case statement is your program and write a complete program]
#include<iostream>
using namespace std;
int main()
{
int x,y;
cin>>x;
switch(x)
{
case 1: y=x*x; break;
case 100: y=2*x; break;
default: y=-1*x; break;
}
return 0;
}
Q5) [3 marks] Write a program in C++ to compute the sum of the following series, then print the result
on the screen:
1 +3+5+...+99
[Hint: Use for statement in your program]
#include<iostream>
using namespace std;
int main()
{
int sum =0;
for (int i=1;i<=99;i+=2)
sum+=i;
cout<<"The value of the summation = "<<sum<<endl;
return 0;
}