Section 3.3 For Loops
Even though the
while
type of construct is very useful in a wide variety of situations, another iterative structure, the
for
statement, can be used to iterate across a range of values easily. A
for
statement allows us to write a loop that is executed a specific number of times.
In the example above, the
hello world statement is executed 10 times.
A common use of the
for
construct is to implement
certain repetition over a range of values.
The code will use
cout
five times. The value of the variable
i
will start at 0 and go through the full sequence of values 0,1,2,3,4. This value is then squared and printed.
Subsection 3.3.1 Check yourself
#include <iostream>
using namespace std;
int main() {
for (int counter=0; counter<4; counter++) {
cout << counter * 2 << " ";
}
return 0;
}
Reading Questions Reading Question
1.
Using the code above please select the answer that should appear?
Good Job!
Not quite, take another look at the operation happening in the cout line
Not quite, take another look at the for loop
Not quite, take another look at the operation happening in the cout line
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