Compilare: main.cpp: In function 'int main()': main.cpp:59:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(i=0; i<C.size(); i++) | ~^~~~~~~~~ main.cpp:62:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for(i=0; i<O.size(); i++) | ~^~~~~~~~~ main.cpp:83:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | if(i==C.size()) i=0; | ~^~~~~~~~~~ main.cpp:90:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(i=0; i<etape[e].size(); i++) | ~^~~~~~~~~~~~~~~~ main.cpp: In function 'void euler(int, int)': main.cpp:100:9: warning: unused variable 'i' [-Wunused-variable] 100 | int i; | ^