Compilare: user.cpp: In function ‘int main()’: user.cpp:37:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cautbin.in", "r", stdin); ^ user.cpp:38:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cautbin.out", "w", stdout); ^ user.cpp:39:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:41:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=1;i<=n;i++) scanf("%d", &a[i]); ^ user.cpp:42:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ user.cpp:45:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y); ^ user.cpp: In function ‘int caut0(int)’: user.cpp:6:18: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st=1, dr=n, m; ^ user.cpp: In function ‘int caut1(int)’: user.cpp:17:18: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st=1, dr=n, m; ^ user.cpp: In function ‘int caut2(int)’: user.cpp:27:18: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st=1, dr=n, m; ^ user.cpp: In function ‘int main()’: user.cpp:17:18: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st=1, dr=n, m; ^ user.cpp:27:18: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st=1, dr=n, m; ^