Compilare: user.cpp: In function ‘int main()’: user.cpp:40:18: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] scanf("%d",N); ^ user.cpp:45:27: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘int’ [-Wformat=] scanf("%d %d",op,x); ^ user.cpp:45:27: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘int’ [-Wformat=] user.cpp:38:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.in","r",stdin); ^ user.cpp:39:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("hashuri.out","w",stdout); ^ user.cpp:40:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",N); ^ user.cpp:45:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",op,x); ^ user.cpp:10:21: warning: ‘x’ is used uninitialized in this function [-Wuninitialized] int value = x % Mod; ^ user.cpp:44:16: note: ‘x’ was declared here int op,x; ^ user.cpp:45:28: warning: ‘op’ may be used uninitialized in this function [-Wmaybe-uninitialized] scanf("%d %d",op,x); ^