Money with Arun

• Problem Description

  
  Arun has given half of the amount to his friends whenever he met his friends, the money left in arun hand is passed as the input and the number of friends be who receive the money as a input, you should print the inital amount arun had in his hand. Use structure to implement the code.
  
  Input Method
  
  Integers of values of amount and number of friends
  
  Output Method
  
  Initial amount of Arun
  
  Explanation:
  
  Suppose Arun have Rs.100 in his hand at the end, gave money to 2 friends refers the initial amount
  calculated by 100*2=200, 200*2=400, so initial amount of Arun is Rs.400.

• Test Case 1

  
  Input (stdin)

  100 2
  
  

  Expected Output

  400

• Test Case 2

  
  Input (stdin)

  100 5
  
  

  Expected Output

  2500

• Program

• #include <stdio.h>
  int main()
  {
     int a,b,i=0,c,d;
    scanf("%d%d",&a,&b);
    c=a*2;
    d=c;
    while(i<b-1)
    {
      d=d*2;
      
      i++;
    }
      
  
    printf("%d",d);
  
   return 0;
  }