Grade

#include <stdio.h>
int main()
{
double m;
scanf ("%lf",&m);
if(m>80&&m<=100)
{
printf ("Grade is 4.00/n");
}
else if (m>=75&&m<=79)
{
printf ("Grade is 3.50/n");
}
else if (m>=70&&m<=75)
{
printf ("Grade is 3.00/n");
}
else if (m>=65&&m<=69)
{
printf ("Grade is 2.50/n");
}
else if (m>=60&&m<=64)
{
printf ("Grade is 2.00/n");
}
else
{
printf ("Grade is fail");
}
return 0;
}