What is the sum of the digits of the number 2^1000?

Question

This is a problem from Project Euler, and this question includes some source code, so consider this your spoiler alert, in case you are interested in solving it yourself. It

Answer 1

 main()
 {
   char c[60];
  int k=0;
     while(k<=59)
      {
    c[k]='0';
   k++;

    }
       c[59]='2';
       int n=1;
     while(n<=999)
       {
       k=0;
     while(k<=59)
      {
        c[k]=(c[k]*2)-48;
        k++;
      } 
    k=0;
     while(k<=59)
        {
        if(c[k]>57){ c[k-1]+=1;c[k]-=10;   }
       k++;
         }
       if(c[0]>57)
        {
         k=0;
         while(k<=59)
           {
         c[k]=c[k]/2;
          k++;
           }
           printf("%s",c);
             exit(0);
           }

            n++;
            }
          printf("%s",c);
              }