How to put stack infile stream

Hi guys
I am presently using stack for storing variables using push and pop operation in C++,since my requirement of these variables is in reverse order .However i want to put these variables in file I/O using fstream as i want to use pop operation in different program. can u suggest me which comd to use as well as any other efficient means to solve this problem. Data type I am using is uint32_t and these variables will be called by various other modules of the prog and need to be used only once thus stack is fulfilling my purpopse.

Generally you use "<<" to put things into a stream.

Thanks,
The piece of code for stack function is as under
//PUSH Function

Code:

template <class Stacktype> void Stack<Stacktype>::Push(Stacktype ob)
	{
		if(tos== size) {
		cout<<"Stack is full "<<endl;
		return;
		}
		else{
		ofstream outsession("stk_chain", ios::out);
		if(!outsession){
			cout<< "Cannot open file"<< endl;
			return ;
			}
		stck[tos] = ob;
		outsession.write((const char *)&stck[tos], sizeof(Stacktype));
		tos++;
		outsession.close();
		}
	}
	
int main(){
	Stack<uint32_t> s1;
	uint32_t val;			
		if(!s1.Push(val))
					cout<<endl << "Stack Full";
		else{
			cout<<endl<<"Push successfull";
			printf("%.8x\n", val);
					
		}
	}

above fn is working fine with other data type like char int etc .My prog is generating uint32_t value,for eg( 34cbbc6e,cdd896b0,c7fb864d,74cd8776).It gives following error on compilation
" stkfile_clhash.cpp:70: error: could not convert ‘s1.Stack<Stacktype>::Push [with Stacktype = unsigned int](val)’ to ‘bool’
stkfile_clhash.cpp:70: error: in argument to unary ! "

pl help

If you want to use the return value of a function, you should make it return something. You've got a pretty obvious use case here for a boolean return (true on success, false on failure), so make it so.

Thanks a lot to everybody for good cooperation.
problem resolved
rgds