C++ Final Exam (Fall 2000)
Name:
ID:
•Write your answer next to question number. All
other answers will be ignored.
•Note that the answers are based on C++ com-
piler on penguin.
True/False: (4 points each)
1. The float type will ”wrap-around” when its
point of overflow occurs.
2. char *msg = ”Hello”; is equivalent to char
*msg = {’H’,’e’,’l’,’l’,’o’,’\0’};
3. The following code
#define SQUARE(X) (X * X)
y=SQUARE(u + v);
is equivalent to y=(u + v)*(u + v).
4. The null pointer, NULL is defined in
<stdio.h>and is guarenteed to be an invalid
address.
5. The string length (strlen()) of the following
is 6.
char txt[] = { ’C’, ’s’, ’\t’, ’7’,
’4’, ’\n’, ’\0’ };
Multiple Choice: (4 points each)
1. What would be printed by the following
statements?
#include <iostream.h>
int f(int &i)
{
i = 10;
return(5 * i);
}
int main()
{
int n = 5;
f(n);
cout << n << "\n";
return 0;
}
(a) 5
(b) 10
(c) 50
(d) Compilation/Linkage Error.
2. What would be printed by the following
statements?
int y[3][3] = {1, 2, 3,
4, 5, 6,
7, 8, 9};
cout << y[1][2];
(a) 5
(b) 6
(c) 2
(d) 4
3. What would be printed by the following
program?
#include <iostream.h>
int sub1(int &n)
{
n--;
return n;
}
int main()
{
int m = 10;
for(int j = 0; j < 10; j++)
m -= sub1(j);
cout << m << "\n";
return 0;
}
(a) 0
(b) 1
(c) 9
(d) 10
(e) None of the above.
4. Which operator has the highest prece-
dence?
(a) .
(b) *
(c) []
(d) &
5. What would be printed by the following
statements?
double *pt;
double a[3]={1.2, 2.3, 3.4};
pt=&a[1];
pt+=1;
cout<<*pt<<endl;
1
