C++ Primer Plus

Program Notes

The while condition in Listing 5.13 looks like this:

while (name[i] != '\0')

It tests whether a particular character in the array is the null character. For this test to eventually succeed, the loop body needs to change the value of i. It does so by incrementing i at the end of the loop body. Omitting this step keeps the loop stuck on the same array element, printing the character and its code until you manage to kill the program. Getting such an infinite loop is one of the most common problems with loops. Often you can cause it when you forget to update some value within the loop body.

You can rewrite the while line this way:

while (name[i])

With this change, the program works just as it did before. That’s because when name[i] ...