Compilare: user.cpp: In function ‘void PD()’: user.cpp:18:9: warning: unused variable ‘i’ [-Wunused-variable] int i=1,j=1; ^ user.cpp:18:13: warning: unused variable ‘j’ [-Wunused-variable] int i=1,j=1; ^ user.cpp: In function ‘int main()’: user.cpp:38:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:42:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i]); ^ user.cpp:46:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&b[i]); ^