/in/foo.cc: In function 'int main()':
/in/foo.cc:10:25: error: 'srlen' was not declared in this scope
 unsigned int len=srlen(k);
                         ^
/in/foo.cc:12:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
 for(char *p=a;p=strstr(a,k);p+=len(k))cnt++;
                           ^
/in/foo.cc:12:37: error: 'len' cannot be used as a function
 for(char *p=a;p=strstr(a,k);p+=len(k))cnt++;
                                     ^