Learn to Program with C_ Learn to Program using the Popular C Programming Language ( PDFDrive )

Chapter 4 ■ Programs with Selection Logic
The example illustrates one style of writing a block in an if statement. This style matches { and } as
follows:
if (<condition>)
{
<statement1>;
<statement2>;
etc.
}
Here, { and } line up with if and the statements are indented. This makes it easy to recognize
what’s in the body. For a small program, it probably doesn’t matter, but as program size increases,
it will become more important for the layout of the code to reflect its structure. In this book, we will
use the following style (as you would know by now, the compiler doesn’t care which style is used):
if (<condition>) {
<statement1>;
<statement2>;
etc.
}
We will put { on the first line after the right bracket and let } match up with if; the statements
in the block are indented. We believe this is as clear as the first style and it’s one less line in the
program! Which style you use is a matter of personal preference; choose one and use it consistently.
4.3.1 Find the Sum of Two Lengths
Suppose that a length is given in meters and centimeters, for example, 3m 75cm. You are given
two pairs of integers representing two lengths. Write a program to prompt for two lengths and
print their sum such that the centimeter value is less than 100.
For example, the sum of 3m 25cm and 2m 15cm is 5m 40cm, but the sum of 3m 75cm and
5m 50cm is 9m 25cm.
Assume the program works as follows:
Enter values for m and cm: 3 75
Enter values for m and cm: 5 50
Sum is 9m 25cm
Observe that the data must be entered with digits only. If, for instance, we type 3m 75cm we will
get an error since 3m is not a valid integer constant. Our program will assume that the first number
entered is the meter value and the second number is the centimeter value.
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