C++ LANGUAGE NESTED IF STATEMENT PAGE 62

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C++ LANGUAGE NESTED IF STATEMENT

Nested if Statement 


It is always legal to nest if-else statements, which means you can use 
one if or else if statement inside another if or else if statement(s). 
Syntax 
The syntax for a nested if statement is as follows: 
if( boolean_expression 1) 
{ 
   // Executes when the boolean expression 1 is true 
   if(boolean_expression 2) 
   { 
      // Executes when the boolean expression 2 is true 
   } 
} 
 
You can nest else if...else in the similar way as you have nested if statement. 
Example 
#include <iostream> 
using namespace std; 
  
int main () 
{ 
   // local variable declaration: 
   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 
          cout << "Value of a is 100 and b is 200" << endl; 
       } 
   } 
   cout << "Exact value of a is : " << a << endl; 
   cout << "Exact value of b is : " << b << endl; 
  
   return 0; 
} 
When the above code is compiled and executed, it produces the following result: 
Value of a is 100 and b is 200 
Exact value of a is : 100 
Exact value of b is : 200