if else c 2b 2b

1if (condition) {
2    // block of code if condition is true
3}
4else {
5    // block of code if condition is false
6}

1   if( a == 10 ) {
2      cout << "Value of a is 10" << endl;
3   } else if( a == 20 ) {
4      // if else if condition is true
5      cout << "Value of a is 20" << endl;
6   } 

1// Program to check whether an integer is positive or negative
2// This program considers 0 as a positive number
3
4#include <iostream>
5using namespace std;
6
7int main() {
8     int number;
9
10    cout << "Enter an integer: ";
11    cin >> number;
12    if (number >= 0) {
13        cout << "You entered a positive integer: " << number << endl;
14    }
15    else {
16        cout << "You entered a negative integer: " << number << endl;
17    }
18    cout << "This line is always printed.";
19    return 0;
20}

1if(condizione){
2    //Istruzione
3}
4else{
5    //Istruzione
6}

1#include <iostream>
2using namespace std;
3int main()
4{
5  int a;
6  cin>>a;
7  if(a= 0);
8  {
9    cout<<"a = " << a;
10  }
11}
12
13

1#include<iostream>
2using namespace std;
3int main(){
4	int eta; 
5	cout<<"Ciao Utente inserisci la tua eta'! "<<"\n";
6	cin>>eta;
7	if(eta >= 18){
8		cout<<"Benvenuto al cinema!";
9	}
10}