Processing string to int

In order to process a string and convert it to an integer in various programming languages, you typically need to use built-in functions or methods. These functions or methods will handle the parsing and conversion for you. Here are some examples in different programming languages:

JavaScript:

    
      // Using the parseInt() function
      const stringNumber = "123";
      const integerNumber = parseInt(stringNumber);
      console.log(integerNumber); // Output: 123
      
      // Using the Number() function
      const stringNumber2 = "456";
      const integerNumber2 = Number(stringNumber2);
      console.log(integerNumber2); // Output: 456
      
      // Using the unary plus operator
      const stringNumber3 = "789";
      const integerNumber3 = +stringNumber3;
      console.log(integerNumber3); // Output: 789
    
  

Python:

    
      # Using the int() function
      string_number = "123"
      integer_number = int(string_number)
      print(integer_number) # Output: 123
      
      # Using the float() function
      string_number2 = "456"
      integer_number2 = float(string_number2)
      print(integer_number2) # Output: 456.0
      
      # Using the eval() function
      string_number3 = "789"
      integer_number3 = eval(string_number3)
      print(integer_number3) # Output: 789
    
  

Java:

    
      // Using the Integer.parseInt() method
      String stringNumber = "123";
      int integerNumber = Integer.parseInt(stringNumber);
      System.out.println(integerNumber); // Output: 123
      
      // Using the Integer.valueOf() method
      String stringNumber2 = "456";
      int integerNumber2 = Integer.valueOf(stringNumber2);
      System.out.println(integerNumber2); // Output: 456
      
      // Using the new Integer() constructor
      String stringNumber3 = "789";
      Integer integerNumber3 = new Integer(stringNumber3);
      System.out.println(integerNumber3); // Output: 789