Compilare: user.cpp: In function ‘int main()’: user.cpp:24:15: warning: unused variable ‘j’ [-Wunused-variable] int n, i, j, s, t, d, rod, pat, vgr; ^ user.cpp:24:21: warning: unused variable ‘t’ [-Wunused-variable] int n, i, j, s, t, d, rod, pat, vgr; ^ user.cpp:24:24: warning: unused variable ‘d’ [-Wunused-variable] int n, i, j, s, t, d, rod, pat, vgr; ^ user.cpp: In function ‘void patrat(int, int)’: user.cpp:52:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void f1()’: user.cpp:82:9: warning: unused variable ‘c’ [-Wunused-variable] int c; ^ user.cpp: In function ‘void f2()’: user.cpp:96:15: warning: unused variable ‘ok’ [-Wunused-variable] int c, r, ok; ^ user.cpp: In function ‘int main()’: user.cpp:21:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresie2.in","r",stdin); ^ user.cpp:22:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("expresie2.out","w",stdout); ^ user.cpp:26:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",q); ^