Compilare: user.cpp: In function ‘int main()’: user.cpp:29:15: warning: unused variable ‘s’ [-Wunused-variable] int i, j, s, t, d, ma; ^ user.cpp:29:18: warning: unused variable ‘t’ [-Wunused-variable] int i, j, s, t, d, ma; ^ user.cpp:29:21: warning: unused variable ‘d’ [-Wunused-variable] int i, j, s, t, d, ma; ^ user.cpp:29:24: warning: unused variable ‘ma’ [-Wunused-variable] int i, j, s, t, d, ma; ^ user.cpp: In function ‘void lee()’: user.cpp:68:18: warning: unused variable ‘j’ [-Wunused-variable] int x, y, i, j, x_aa, y_aa; ^ user.cpp: In function ‘int main()’: user.cpp:26:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sudest.in","r",stdin); ^ user.cpp:27:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sudest.out","w",stdout); ^ user.cpp:31:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:34:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i][j]); ^ user.cpp:39:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^ user.cpp:41:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&D[i]); ^