Compilare: user.cpp: In function ‘void idem()’: user.cpp:82:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < principal.size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:121:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < principal.size(); i++) { ^ user.cpp:131:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < curr.size(); i++) { ^ user.cpp:149:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < principal.size(); i++) { ^ user.cpp:151:46: warning: narrowing conversion of ‘i’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] sorted[size++] = (pair){power[i], i}; ^ user.cpp:117:23: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s, Nadejde, f); ^