How to understand this?

Question

for(int i = 0; str[i]!='\0'; i++) {

if(str[i]==' ') {

if(chk!=0)

countWord++;

chk=0;

} else
{

chk++;

}
}

Answer 1

Dear FF9900 I really don't understand what you mean by marker, can you please elaborate?
Thanks

Answer 2

Thank you for explaining that, but can you please explain to me why we need a marker in the first place?