Answers 841F
Exercises
1.long array[50];- Notice that in the following answer, the 50th element is indexed to 49. Remember
that arrays start at 0.
array[49] = 123.456; - When the statement is complete,xequals 100.
- When the statement is complete,ctrequals 11. (ctrstarts at 2 and is incremented
by 3 while it is less than 10 .) - The inner loop prints five Xs. The outer loop prints the inner loop 10 times. This
totals 50 Xs. - The code is as follows:
int x;
for( x = 1; x <= 100; x += 3) ; - The code is as follows:
int x = 1;
while( x <= 100 )
x += 3; - The code is as follows:
int ctr = 1;
do
{
ctr += 3;
} while( ctr < 100 ); - This program never ends. recordis initialized to 0. The whileloop then checks to
see whether recordis less than 100. 0 is less than 100 , so the loop executes, thus
printing the two statements. The loop then checks the condition again. 0 is still,
and always will be, less than 100 , so the loop continues. Within the brackets,
recordneeds to be incremented. You should add the following line after the sec-
ondprintf()function call:
record++; - Using a defined constant is common in looping; you’ll see examples similar to this
code fragment in Weeks 2 and 3. The problem with this fragment is simple. The
semicolon doesn’t belong at the end of the forstatement. This is a common bug.
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