Run id: 100126

Main.cc: In function 'int main()':
Main.cc:9:17: error: 's' was not declared in this scope
    for (int i = s; i < n.length(); i++) { 
                 ^
Main.cc:9:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = s; i < n.length(); i++) { 
                      ^