Szathmáry László honlapja @ DEIK | DLang / switch statement

(1) switch statement
#include <stdio.h> int main() { int n1 = 3; char op = '-'; int n2 = 2; int result = 0; switch (op) { case '+': result = n1 + n2; break; case '-': result = n1 - n2; break; } printf("result: %d\n", result); return 0; }	#!/usr/bin/env rdmd import std.stdio; void main() { int n1 = 3; char op = '-'; int n2 = 2; int result = 0; switch (op) { case '+': result = n1 + n2; break; case '-': result = n1 - n2; break; default: break; } writefln("result: %s", result); }
`break` is optional (falls over if missing) `default` branch is optional	compile error if `break` is missing `default` branch must be present

Output:

result: 1

Notes:

In D, the switch expression can be any integer type (including char), any string type, and bool.

(2) variations
	case 2: .. case 5: // closed interval writeln("2, 3, 4 or 5"); break; case 9, 10: // distinct values writeln("9 or 10"); break;