Compilare: user.cpp: In function ‘void rot()’: user.cpp:20:15: warning: unused variable ‘L’ [-Wunused-variable] int i, j, L, R; ^ user.cpp:20:18: warning: unused variable ‘R’ [-Wunused-variable] int i, j, L, R; ^ user.cpp: In function ‘void dp()’: user.cpp:40:9: warning: unused variable ‘ant’ [-Wunused-variable] int ant, val, i, j, lo, hi; ^ user.cpp: In function ‘int main()’: user.cpp:111:33: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘short int*’ [-Wformat=] scanf("%d", &a[i][j]); ^ user.cpp:104:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("treid.in", "r", stdin); ^ user.cpp:105:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("treid.out", "w", stdout); ^ user.cpp:108:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:111:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i][j]); ^