Boolean values: Difference between revisions

=={{header|Little}}==

For conditionals, numeric variables (including poly variables

with a number in them), evaluate to true or false based on

their value

Use the defined() buildin to test if a variable is defined.

For the rest of variable types the value depend if the variable

is defined or not.

<lang C>int a = 0;

int b = 1;

int c;

string str1 = "initialized string";

string str2; // "uninitialized string";

if (a) {puts("first test a is false");} // This should not print

if (b) {puts("second test b is true");} // This should print

if (c) {puts("third test b is false");} // This should not print

if (!defined(c)) {puts("fourth test is true");} // This should print

if (str1) {puts("fifth test str1 is true");} // This should print

if (str2) {puts("sixth test str2 is false");} // This should not print</lang>