Compilare: main.cpp: In function 'int main()': main.cpp:26:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i = 0; i < strlen(sir); i++) { | ~~^~~~~~~~~~~~~ main.cpp:29:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 29 | while( i < strlen(sir) && '0' <= sir[i] && sir[i] <= '9' ) { | ~~^~~~~~~~~~~~~ main.cpp:99:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Numar>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 99 | for(int i = 0; i < v.size(); i++) { | ~~^~~~~~~~~~ main.cpp:17:9: warning: unused variable 'aux' [-Wunused-variable] 17 | int aux, index; | ^~~ main.cpp:98:10: warning: unused variable 'operatie' [-Wunused-variable] 98 | char operatie; | ^~~~~~~~