Smoking is prohibited 1 CS 101 Second Exam Review Prepared by Dr. Amer Al-Badarneh 

Smoking is prohibited 2MC-1  What is the output of the following code? int j = 1; while (j < 10) { cout << j << " "; j = j + j%3; }  a  b  c  d

Smoking is prohibited 3MC-2  What is the output of the following code? int count = 7; while ( count >= 4 ) cout << count--; cout << ”0”;  a  b  c  d

Smoking is prohibited 4MC-3  What is the output of the following code? int k = 4; while (k >= 1) cout << k--;  a.432  b.4321  c  d.infinity

Smoking is prohibited 5MC-4  What is the output of the following code? int i = 1; while ( i = 5 ) { ++i; cout << i << endl; }  a  b.1234  c.123  d.66666… for infinity

Smoking is prohibited 6MC-5  What is the output of the following code? int i = 1, s = 0; while ( i < 5 ) { s = s + i; i = i + 1; } cout << i << s;  a.610  b.611  c.511  d.510

Smoking is prohibited 7MC-6  What is the output of the following code? int j; for (j = 0; j < 5; ) { cout << j; j++ ; }  a  b.Nothing  c  d … for infinity.

Smoking is prohibited 8MC-7  What is the output of the following code? for(int j = 10; j > 5; j--) cout << j << " ";  a  b  c  d

Smoking is prohibited 9MC-8  What will happen if you try to compile and run the following code? int a =1; for( ; ; ) { if (a > 5) break; cout << a++; }  a. Creates a syntax error  b. Nothing will print  c. Printing out  d. Infinity loop

Smoking is prohibited 10MC-9  What is the output of the following code? for (int i = 1; i <= 5; i++) { if( i > 3 )break; elsecontinue; cout << i; }  a  b.1234  c.4  d.nothing

Smoking is prohibited 11MC-10  What is the output of the following code? int x = 1; for(;;) { if(x%4 == 0) break; cout << x; x++; }  a.1234  b.123  c.1  d.infinite loop

Smoking is prohibited 12MC-11  What is the output of the following code? for int (i = 0; i < 10; i++); cout << i%2;  a  b  c.0  d.1

Smoking is prohibited 13MC-12  What is the output of the following code? int k = 1, s = 0; for( ; k <= 8; k *= 2, s += k); cout << s;  a  b.14  c.30  d.0

Smoking is prohibited 14MC-13  What is the output of the following code? int i, sum = 0; for (i = 1; i < 5; i += 1) sum = sum + i; cout << sum;  a.0  b.15  c.10  d.1

Smoking is prohibited 15MC-14  Select the for statement that is equivalent to the following for statement: for (j = 0; j < 8; j++)  a. for (k = 8; k > 1; k -= 1)  b. for (k = 8; k >= 0; k -= 1)  c. for (k = 8; k > 0; k -= 1)  d. for (k = 8; k >= 1; k -= 1)

Smoking is prohibited 16MC-14  The following for loop: for (int i = 4 ; i < 9 ; i++) cout << ”x”;  a.will print ‘x’ 4 times.  b.will print ‘x’ 5 times.  c.will print ‘x’ 6 times.  d.will print ‘x’ repeatedly due to an endless loop.  e.will not compile because braces are missing.

Smoking is prohibited 17MC-15  What is the output of the following code?  int i, j; for (i=0, j=8; i<8; i++, j--) cout<<i<<"+"<<j<<"="<<i+j<<endl;  0+8=8  1+7=8  2+6=8  3+5=8  4+4=8  5+3=8  6+2=8  7+1=8

Smoking is prohibited 18MC-16  What is the output of the following code? int i, j; for ( i = 0; i < 2; ++i ) for ( j = 0; j < 5; ++j ) cout << i << " " << j << endl;  0 0  0 1  0 2  0 3  0 4  1 0  1 1  1 2  1 3  1 4

Smoking is prohibited 19MC-17  What is the output of the following code? int i; for(i = 1; i <= 5; i++) cout << i << i%2 << endl;  11  20  31  40  51

Smoking is prohibited 20MC-18  Write a C++ program to display the following B BB BBB BBBB BBBBB  #include  #include  void main(){  int i, j;  for(i = 1; i <= 5; i++){  for(j = 1; j <= i; j++)  cout << ‘B’;  cout << endl;  } }}}}

Smoking is prohibited 21MC-19  What three parts of a counting loop must be coordinated in order for the loop to work properly?  a. initializing the counter, testing the counter, changing the counter  b. initializing the condition, changing the condition, terminating the loop  c. the while, the assignment, and the loop body  d. the while statement, the if statement, and sequential execution.

Smoking is prohibited 22MC-20  What makes a loop a counting loop?  a. A loop control variable is tested in the while statement, and is changed each time the loop body executes.  b. A counter is counted upwards by one until it hits a particular limit.  c. A counter is counted downwards by one until it hits zero.  d. No loop control variables are used.

Smoking is prohibited 23MC-21  What does this code print on the monitor? int count = 0; while ( count <= 6 ) { cout << count + " "; count = count + 2; }  a  b  c  d

Smoking is prohibited 24MC-22  What does this code print on the monitor? int count = 7; while ( count >= 4 ) { cout << count + " "; count = count - 1; }  a  b  c  d

Smoking is prohibited 25MC-23  What does this code print on the monitor? int count = -2 ; while ( count < 3 ) { cout << count + " "; count = count + 1; }  a  b  c  d

Smoking is prohibited 26MC-24  What does this code print on the monitor? int count = 1; while ( count < 5 ) { cout << count + " "; }  a  b  c  d

Smoking is prohibited 27MC-25  What condition should be used so that the code writes out: int count = 1; while ( ___________ ) { cout << count + " "; count = count + 1; }  a. count < 8  b. count < 9  c. count+1 <= 8  d. count != 8