Compilare: user.cpp: In function ‘int main()’: user.cpp:26:24: warning: unused variable ‘min’ [-Wunused-variable] int n, i, nr=0, t, min, ind, first, last, j, k, poz, lvl; ^ user.cpp:26:29: warning: unused variable ‘ind’ [-Wunused-variable] int n, i, nr=0, t, min, ind, first, last, j, k, poz, lvl; ^ user.cpp:26:34: warning: unused variable ‘first’ [-Wunused-variable] int n, i, nr=0, t, min, ind, first, last, j, k, poz, lvl; ^ user.cpp:26:41: warning: unused variable ‘last’ [-Wunused-variable] int n, i, nr=0, t, min, ind, first, last, j, k, poz, lvl; ^ user.cpp:23:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma4.in", "r", stdin); ^ user.cpp:24:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("suma4.out", "w", stdout); ^ user.cpp:28:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:39:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hd", &m[k][i][j]); ^