Compilare: user.cpp: In function ‘int main()’: user.cpp:8:17: warning: too many arguments for format [-Wformat-extra-args] scanf("%d",&a,&b); ^ user.cpp:16:18: warning: spurious trailing ‘%’ in format [-Wformat=] else printf("%",x); ^ user.cpp:16:18: warning: too many arguments for format [-Wformat-extra-args] user.cpp:5:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc.in","r",stdin); ^ user.cpp:6:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc.out","w",stdout); ^ user.cpp:8:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a,&b); ^