Difference between if-else and switch operator in C++?

Programming Language
#1

If statement is used to test the condition. There are various types of if statements in C++.

  • if statement
  • if-else statement
  • nested if statement
  • if-else-if ladder

The C++ if statement tests the condition. It is executed if condition is true.

#include <iostream>  
using namespace std;  
   
int main () {  
   int num = 10;    
            if (num % 2 == 0)    
            {    
                cout<<"It is even number";    
            }   
   return 0;  
}

#include <iostream>  
using namespace std;  
int main () {  
   int num = 11;    
            if (num % 2 == 0)    
            {    
                cout<<"It is even number";    
            }   
            else  
            {    
                cout<<"It is odd number";    
            }  
   return 0;  
}

C++ If-else Ladder

if(condition1){    
//code to be executed if condition1 is true    
}else if(condition2){    
//code to be executed if condition2 is true    
}    
else if(condition3){    
//code to be executed if condition3 is true    
}    
...    
else{    
//code to be executed if all the conditions are false    
}

Switch Statements - The C++ switch statement executes one statement from multiple conditions. It is like if-else-if ladder statement in C++.

int main () {  
       int num;  
       cout<<"Enter a number to check grade:";    
       cin>>num;  
           switch (num)    
          {    
              case 10: cout<<"It is 10"; break;    
              case 20: cout<<"It is 20"; break;    
              case 30: cout<<"It is 30"; break;    
              default: cout<<"Not 10, 20 or 30"; break;    
          }    
    }