Compilare: user.cpp: In function ‘int main()’: user.cpp:55:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k, p, sl, sc, nr = 0, co = 1; ^ user.cpp:55:18: warning: unused variable ‘p’ [-Wunused-variable] int i, j, k, p, sl, sc, nr = 0, co = 1; ^ user.cpp:53:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.in","rt",stdin); ^ user.cpp:54:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.out","wt",stdout); ^ user.cpp:56:53: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d",&n, &m, &sl, &sc, &fl, &fc); ^ user.cpp:60:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &(v[i][j])); ^