Once in a while C++ programmer encounter “intelligence tests” which have the programmer examine some source code and make corrections or modifications to it. Here are a few challenges for you to try.

The code below is to write a dash “-” to the screen 40 times. You can replace, remove, or add one character in the code. Can you find 2 solutions?
```
int j, k = 40;
for( j = 0; j < k; --j)
cout << “-“;
```

```
There are two solutions to this puzzle. First, change the - - j to - - k
int j, k = 40;
for( j = 0; j < k; --k)
cout << "-";
The second solution is to add a negative sign to the j in the comparison statement
int j, k = 40;
for( j = 0; -j < k; --j)
cout << "-";
```