How do I take the user's input for how many legs are on the trip and have it loop that amount of times?

  int counter = 0;
       int  gas = 0;
       int legs = 1;
       double miles = 0;
       int mph= 0;
       
       System.out.print("How many gallons of gas in you tank(Integer 1-20):");
            gas = input.nextInt();
            gas =gas;
         System.out.print("How many legs on your trip?: ");
         legs=input.nextInt();
         
         for (int x = 0; x< legs ; legs   );
         {
             System.out.printf("Enter leg %d distance(Miles): ",counter);
             miles=input.nextDouble();
             
             System.out.printf("Enter leg %d Speed(MPH): ",counter);
             mph=input.nextInt();

CodePudding user response：

Include Scanner sc= new Scanner(System.in); in your code to read input from the console. And use sc.nextInt() to read inputs.

And remove ; after for-loop which is terminating the loop. And your trying to increament legs in for-loop instead of x change it to for (int x = 0; x<legs ; x ) .

Here is the modified code which worked for me

            int counter = 0;
            int  gas = 0;
            int legs = 1;
            double miles = 0;
            int mph= 0;
       Scanner sc= new Scanner(System.in); 
       System.out.print("How many gallons of gas in you tank(Integer 1-20):");
            gas = sc.nextInt();
            gas =gas;
         System.out.print("How many legs on your trip?: ");
         legs=sc.nextInt();
         
         for (int x = 0; x<legs ;  x  )
         {
             System.out.printf("Enter leg %d distance(Miles): ",x);
             miles=sc.nextDouble();
             
             System.out.printf("Enter leg %d Speed(MPH): ",x);
             mph=sc.nextInt();
         }

CodePudding user response：

you must write : for(int x=0; x<legs;x ) not: for(int x=0; x<legs;legs ) this loop will be infinitive unless legs is negative number