What is the output of the following:

Take input a=547, b=537,c=457,d=588,e=489

#includestdio.h
int main()
{
    int a,b,c,d,e,f;
    printf("enter a,b,c,d and e:");
    scanf("%d%d%d%d%d%d",&a,&b,&c,&d,&e,&f);
    if(ab&&ac&&ad&&ae&&af)
    {
        printf("max is %d",a);
    
    }
    else if(bc&&bd&&b&&e&&bf)
    {
         printf("max is %d",b);
    }
    else if(cd&&ce&&cf)
    {
     printf("max is %d",c);
    }
   else if (de&&df)
    {
         printf("max is %d",d);
    }
    else 
    printf("max is %d",e);
    return 0;
}