Compilare: user.cpp: In function ‘int main()’: user.cpp:43:54: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘unsigned char*’ [-Wformat=] for( j = 1; j <= m; ++j ) scanf("%d",&v[i][j]); ^ user.cpp:38:21: warning: unused variable ‘s’ [-Wunused-variable] int n, m, i, j, s, t, d, k, x1, x2, ma1, ma2; ^ user.cpp:38:24: warning: unused variable ‘t’ [-Wunused-variable] int n, m, i, j, s, t, d, k, x1, x2, ma1, ma2; ^ user.cpp:38:27: warning: unused variable ‘d’ [-Wunused-variable] int n, m, i, j, s, t, d, k, x1, x2, ma1, ma2; ^ user.cpp:38:30: warning: unused variable ‘k’ [-Wunused-variable] int n, m, i, j, s, t, d, k, x1, x2, ma1, ma2; ^ user.cpp:35:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lacusta.in","r",stdin); ^ user.cpp:36:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lacusta.out","w",stdout); ^ user.cpp:41:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:43:55: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for( j = 1; j <= m; ++j ) scanf("%d",&v[i][j]); ^