Compilare: user.cpp: In function ‘int main()’: user.cpp:16:18: warning: unused variable ‘nr’ [-Wunused-variable] int n, m, i, nr, bs, cm, k, maxg, exp2; ^ user.cpp:16:22: warning: unused variable ‘bs’ [-Wunused-variable] int n, m, i, nr, bs, cm, k, maxg, exp2; ^ user.cpp:16:26: warning: variable ‘cm’ set but not used [-Wunused-but-set-variable] int n, m, i, nr, bs, cm, k, maxg, exp2; ^ user.cpp:16:30: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, nr, bs, cm, k, maxg, exp2; ^ user.cpp:14:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "cocochanel.in", "r", stdin ); ^ user.cpp:15:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "cocochanel.out", "w", stdout ); ^ user.cpp:17:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d%d", &n, &m ); ^ user.cpp:20:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d", &c[i] ); ^ user.cpp:23:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d", &g[i] ); ^