Compilare: user.cpp: In function ‘int main()’: user.cpp:26:9: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int c,j,f,l=0,s; ^ user.cpp:26:11: warning: unused variable ‘j’ [-Wunused-variable] int c,j,f,l=0,s; ^ user.cpp:24:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("inversmodular.in","r",stdin); ^ user.cpp:25:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("inversmodular.out","w",stdout); ^ user.cpp:27:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&n); ^