C ++ nested if statements
In C ++,nested if-else statement is legal, which means you can use another iforelse ifstatement in aniforelse ifstatement.
grammar
C ++nested if statements syntax:
if( boolean_expression 1) { // 当布尔表达式 1 为真时执行 if(boolean_expression 2) { // 当布尔表达式 2 为真时执行 } }
You can nestelse if ... else, manner similar to nestedifstatements.
Examples
#include <iostream> using namespace std; int main () { // 局部变量声明 int a = 100; int b = 200; // 检查布尔条件 if( a == 100 ) { // 如果条件为真,则检查下面的条件 if( b == 200 ) { // 如果条件为真,则输出下面的语句 cout << "a 的值是 100,且 b 的值是 200" << endl; } } cout << "a 的准确值是 " << a << endl; cout << "b 的准确值是 " << b << endl; return 0; }
When the above code is compiled and executed, it produces the following results:
a 的值是 100,且 b 的值是 200 a 的准确值是 100 b 的准确值是 200