Compilare: user.cpp: In function ‘int main()’: user.cpp:25:20: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (v[i]>0 && i%d==0) ^ user.cpp:9:15: warning: unused variable ‘max1’ [-Wunused-variable] int t,n,i,max1,vmax=0,a,b,j; ^~~~ user.cpp:9:29: warning: unused variable ‘b’ [-Wunused-variable] int t,n,i,max1,vmax=0,a,b,j; ^ user.cpp:11:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:12:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minlcm.in","r",stdin); ^ user.cpp:13:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("minlcm.out","w",stdout); ^ user.cpp:15:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:18:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a),v[a]++; ^