Compilare: main.cpp: In function 'int process(std::__cxx11::string)': main.cpp:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int f = 0 ; f < a.size() ; f ++) ~~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:53:37: warning: suggest parentheses around assignment used as truth value [-Wparentheses] while(auxptr = strstr(ptr, &a[0])) ^ main.cpp:64:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int f = 0 ; f < v.size() && f < 1000 ; f ++) ~~^~~~~~~~~~