Compilare: main.cpp: In function 'int main()': main.cpp:11:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<b.length(); i++){ ~^~~~~~~~~~~ main.cpp:13:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1; j<a.length(); j++){ ~^~~~~~~~~~~ main.cpp:15:30: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(j=a.length()-1){n++;} ^