Help me in solving SRTARR problem

help
,
1

My issue

include <bits/stdc++.h>
using namespace std;

int main() {
int t,i;
cin>>t;
for(i=1;i<=t;i=i+1)
{
int n,j,c;
cin>>n;
string s;
cin>>s;
c=0;
for(j=0;s[j]!=‘\0’;j=j+1)
{
if(s[j]==1)
{
if(s[j+1]==0)
{
c=c+1;
}
}
}
cout<<c<<“\n”;

}

}

My code

#include <bits/stdc++.h>
using namespace std;

int main() {
	int t,i;
	cin>>t;
	for(i=1;i<=t;i=i+1)
	{
	    int n,j,c;
	    cin>>n;
	    string s;
	    cin>>s;
	    c=0;
	    for(j=0;s[j]!='\0';j=j+1)
	    {
	        if(s[j]==1)
	        {
	            if(s[j+1]==0)
	            {
	                c=c+1;
	            }
	        }
	    }
	    cout<<c<<"\n";
	    
	}
	

}

Problem Link: Sort the String Practice Coding Problem