Compilare: main.cpp: In function 'BigNumber addBigNumbers(BigNumber, BigNumber)': main.cpp:32:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | while(i < a.digits.size() || i < b.digits.size() || rem != 0) | ~~^~~~~~~~~~~~~~~~~ main.cpp:32:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | while(i < a.digits.size() || i < b.digits.size() || rem != 0) | ~~^~~~~~~~~~~~~~~~~ main.cpp:35:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | if(i < a.digits.size()) | ~~^~~~~~~~~~~~~~~~~ main.cpp:40:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | if(i < b.digits.size()) | ~~^~~~~~~~~~~~~~~~~