Compilare: user.cpp: In function ‘void decompose(int)’: user.cpp:37:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ;i < primes.size() ;i++){ ^ user.cpp: In function ‘int explore(int, int)’: user.cpp:61:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p == primep.size()){ ^ user.cpp:80:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:90:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < primep.size() ;i++){ ^