hey manavsm,

In deletion u have compared the rollno(which is string) with '==' operator, which is wrong. In C string are not compared with '==' operator but there is function defined in string.h...

Hey Wait!!

U want to find out how many of them are positive, how many are negative, how many are even and how many odd. But your code will give wrong result. For example u entered 5 as one of the...