Compilare: user.cpp:1:9: warning: #pragma once in main file #pragma once ^~~~ user.cpp: In function ‘void bu()’: user.cpp:19:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i + 1; j < sir.size(); j++) { ~~^~~~~~~~~~~~ user.cpp: In function ‘void afis()’: user.cpp:75:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sir.size(); i++) { ~~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:99:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sir.size(); i++) ~~^~~~~~~~~~~~ user.cpp: In function ‘void afis()’: user.cpp:87:15: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] pos = pp[pos]; ^