why is my code partially submitted?
#include
#include
using namespace std;
int main()
{
int t;
cin>>t;
while(t–)
{
char s1[200], s2[200], s3[200];
cin>>s1>>s2;
int j=0;
for(int i=0; i<strlen(s1); i++)
{
if(s1[i] != s2[i])
{
s3[j++] = ‘1’;
}
else
{
s3[j++] = ‘0’;
}
}
cout<<s3;
cout<<endl;
}
return 0;
}