cannot run programme

[SATHYA JEEVA KANTH]

i cannot run this programme can any one tell me why.
[code=cpp]
#include<iostre am.h>
void main()
{
char grade;
cout<<"pls key:";
cin>>grade;
switch(grade)
{
case 'a':
cout<<"minimum is 30\n";
break;
case'b':
cout<<"minimum is 20\n";
break;
default:
cout<<"minimum is 10\n";
}
}[/code]

[sicarie]

Did your compiler tell you why you couldn't?

3 things you should do in your C++ programs:

1) do not use the .h after iostream - it's depricated.
2) main is an int, not a void, and you need a return type (standard is 0) at the end of the program.
3) Specify/declare your namespace. For beginners, 'using namespace std;' will suffice after your library declarations.

Your compiler might be complaining about these things, mine certainly allowed your code to compile and execute after I changed these things.