Program to print out the letters present in one word and absent in the other.

If you have any doubts, please do ask.

#include<stdio.h>
main()
{
    int i,j,flag=0;
char name1[10],name2[10];
scanf("%s",name1);
scanf("%s",name2);
for(i=0;i<strlen(name2);i++)
{
for(j=0;j<strlen(name1);j++)
{
if(name2[i]==name1[j])
flag=1;
}
if(flag==0)
{printf("%c",name2[i]);

}
else
    flag=0;
}}