Compilare: user.cpp: In function ‘void tip0(int)’: user.cpp:21:11: warning: statement has no effect [-Wunused-value] for(st; st<=dr; ) ^ user.cpp: In function ‘void tip1(int)’: user.cpp:39:11: warning: statement has no effect [-Wunused-value] for(st; st<=dr; ) ^ user.cpp: In function ‘void tip2(int)’: user.cpp:54:11: warning: statement has no effect [-Wunused-value] for(st; st<=dr; ) ^ user.cpp: In function ‘void cit()’: user.cpp:10:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ user.cpp:12:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &a[i]); ^ user.cpp:13:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &m); ^ user.cpp: In function ‘int main()’: user.cpp:65:38: 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:66:40: 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:70:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n", &tip, &x); ^