if else in cpp code example

Example 1: elseif c++

if( a == 10 ) {
      cout << "Value of a is 10" << endl;
   } else if( a == 20 ) {
      // if else if condition is true
      cout << "Value of a is 20" << endl;
   }

Example 2: C++ if else

#include<iostream>
using namespace std;

int main()
{
    int grade;

    cin >> grade;

    if( grade >= 60 )
        cout << "You Pass!" << endl;
    else
        cout << "You Fail..." << endl;

    return 0;
}

Example 3: if c++

int x = 20;
int y = 18;
if (x > y) {
  cout << "x is greater than y";
}

Example 4: c++ if else if

if(boolean_expression 1) {
   // Executes when the boolean expression 1 is true
} else if( boolean_expression 2) {
   // Executes when the boolean expression 2 is true
} else if( boolean_expression 3) {
   // Executes when the boolean expression 3 is true
} else {
   // executes when the none of the above condition is true.
}

Example 5: if c++

#include<iostream>
using namespace std;
int main(){
	int eta; 
	cout<<"Ciao Utente inserisci la tua eta'! "<<"\n";
	cin>>eta;
	if(eta >= 18){
		cout<<"Benvenuto al cinema!";
	}
}