Compilare: main.cpp: In function 'void multip(std::vector<long long int>, std::vector<long long int>, std::vector<long long int>&)': main.cpp:75:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v1.size(); i++){ ~^~~~~~~~~~ main.cpp:76:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<v2.size(); j++){ ~^~~~~~~~~~ main.cpp: In function 'void subtract(std::vector<long long int>, std::vector<long long int>, std::vector<long long int>&)': main.cpp:102:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i>=(v1.size()) && (i>=v2.size()) ){break;} ~^~~~~~~~~~~~~ main.cpp:102:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i>=(v1.size()) && (i>=v2.size()) ){break;} ~^~~~~~~~~~~ main.cpp: In function 'void comb(long long int, long long int, long long int)': main.cpp:224:5: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(b==(pr.size() ) ){ ~^~~~~~~~~~~~~~ main.cpp: In function 'void inc_exc(std::vector<long long int>&)': main.cpp:243:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=pr.size(); i++){ ~^~~~~~~~~~~