Compilare: user.cpp: In function ‘void creare_matrice(int, int)’: user.cpp:10:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cw >= W[i]) ~~~^~~~~~~ user.cpp: In function ‘int main()’: user.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= N; i++) ~~^~~~ user.cpp:24:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= N; i++){ ~~^~~~ user.cpp:25:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int cw = 1; cw <= G; cw++){ ~~~^~~~ user.cpp:16:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rucsac.in", "r", stdin); ^ user.cpp:17:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("rucsac.out", "w", stdout); ^ user.cpp:19:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &G); ^ user.cpp:21:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &W[i], &P[i]); ^