100% inner product

#include<stdio.h>
void main()
{
   int a[3]={1,2,-1};
   int b[3]={1,0,1},i,total=0;  //total is used to store inner product
   for(i=0;i<3;i++)
   {
    total=total+a[i]*b[i];
   }
   printf("\n inner product is : %d",total);
   if(total==0)
   {
     printf("\n the given vectors are orthogonal to each other");
   }
   else
   {printf("\n the two vectors are not orthogonal");
   }
}

తెరమీద 

inner product is : 0

he given vectors are orthogonal to each othe