Compilare: user.cpp: In function ‘bool exc(PRODUS, PRODUS)’: user.cpp:14:48: warning: statement has no effect [-Wunused-value] if(strcmp(e1.prod,e2.prod)==0) e1.CANTITATE<e2.CANTITATE; ^ user.cpp: In function ‘int main()’: user.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<=strlen(v)-1; i++) ^ user.cpp:73:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] }while(i<=strlen(v)-1); ^ user.cpp:22:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reteta2.in", "r", stdin); ^ user.cpp:23:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reteta2.out", "w", stdout); ^