D编程 nested if statements
在D编程中，嵌套if-else语句意味着您可以在另一个if或else if语句中使用一个if或else if语句。
nested if - 语法
嵌套if语句的语法如下所示:-
if( boolean_expression 1) {
/* Executes when the boolean expression 1 is true */
if(boolean_expression 2) {
/* Executes when the boolean expression 2 is true */
}
}nested if - 示例
import std.stdio;
int main () {
/* local variable definition */
int a=100;
int b=200;
/* check the boolean condition */
if( a == 100 ) {
/* if condition is true then check the following */
if( b == 200 ) {
/* if condition is true then print the following */
writefln("Value of a is 100 and b is 200" );
}
}
writefln("Exact value of a is : %d", a );
writefln("Exact value of b is : %d", b );
return 0;
}编译并执行上述代码时，将生成以下结果-
Value of a is 100 and b is 200
Exact value of a is : 100
Exact value of b is : 200