Compilare: user.cpp: In function ‘int cauta(int*, int, int, int)’: user.cpp:11:6: warning: unused variable ‘r’ [-Wunused-variable] int r = 0, mij, st1; ^ user.cpp:11:18: warning: variable ‘st1’ set but not used [-Wunused-but-set-variable] int r = 0, mij, st1; ^ user.cpp: In function ‘int main()’: user.cpp:34:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.in", "r", stdin); ^ user.cpp:35:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("nrtri.out", "w", stdout); ^ user.cpp:37:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:39:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i]); ^ user.cpp: In function ‘int cauta(int*, int, int, int)’: user.cpp:11:13: warning: ‘mij’ may be used uninitialized in this function [-Wmaybe-uninitialized] int r = 0, mij, st1; ^ user.cpp: In function ‘int main()’: user.cpp:11:13: warning: ‘mij’ may be used uninitialized in this function [-Wmaybe-uninitialized]