Binary from decimal

• Problem Description

  
  Lydia learn number conversion concept in C. Her teacher gave a homework to convert the number from decimal to binary. Help her to convert the number from decimal to binary. 
  
  Input should be from 0 to 127
  
  64 32 16 8 4 2 1

• Test Case 1

  
  Input (stdin)

  1
  
  

  Expected Output

  0000001

• Test Case 2

  
  Input (stdin)

  121
  
  

  Expected Output

  1111001

• Program

• #include <stdio.h>
  int main()
  {
     int n,c,k;
    scanf("%d",&n);
    for(c=6;c>=0;c--)
    {
      k=n>>c;
      if(k&1)
        printf("1");
      else
        printf("0");
    }
  
   return 0;
  }