Compilare: main.cpp: In function 'int main()': main.cpp:139:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 139 | for(int i = 1; i < v.size(); i ++) | ~~^~~~~~~~~~ main.cpp:144:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 144 | for(int j = i + 1; j < v.size(); j ++, p *= 10) | ~~^~~~~~~~~~ main.cpp:153:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 153 | for(int j = i + 1; j < v.size(); j ++, p *= 10) | ~~^~~~~~~~~~ main.cpp:168:21: warning: statement has no effect [-Wunused-value] 168 | for(j; j >= 1; j --, p *= 10) | ^ main.cpp:175:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 175 | for(int j = 1; j < v.size(); j ++) | ~~^~~~~~~~~~ main.cpp:188:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 188 | for(int i = 2; i < v.size(); i ++) | ~~^~~~~~~~~~ main.cpp:193:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 193 | for(int j = i + 1; j < v.size(); j ++, p *= 10) | ~~^~~~~~~~~~ main.cpp:203:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 203 | for(int j = 1; j < v.size(); j ++) | ~~^~~~~~~~~~ main.cpp:211:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 211 | for(int j = 1; j <= v.size() - i - 1; j ++) | ~~^~~~~~~~~~~~~~~~~~~