Title here
Summary here
If Else in D Programming Language
Branching with if and else in D is straightforward.
import std.stdio;
void main() {
// Here's a basic example.
if (7 % 2 == 0) {
writeln("7 is even");
} else {
writeln("7 is odd");
}
// You can have an `if` statement without an else.
if (8 % 4 == 0) {
writeln("8 is divisible by 4");
}
// Logical operators like `&&` and `||` are often
// useful in conditions.
if (8 % 2 == 0 || 7 % 2 == 0) {
writeln("either 8 or 7 are even");
}
// A statement can precede conditionals; any variables
// declared in this statement are available in the current
// and all subsequent branches.
if (auto num = 9; num < 0) {
writeln(num, " is negative");
} else if (num < 10) {
writeln(num, " has 1 digit");
} else {
writeln(num, " has multiple digits");
}
}To run the program:
$ dmd -run if_else.d
7 is odd
8 is divisible by 4
either 8 or 7 are even
9 has 1 digitNote that you don’t need parentheses around conditions in D, but the braces are required.
D does not have a ternary if operator, so you’ll need to use a full if statement even for basic conditions. However, D provides an alternative in the form of the ?: operator, which can be used for simple conditional expressions.