double precision or what?

[mickey]

I coded this:

setInput(double* d) {
	cout << "  *d0 " << d[0] << " " << "*d1 " << d[1] << endl;
	for (int i=0; i < _num_input; ++i)
		_input[i] = d[i];		
}
 
main () {
        double input[2] = {4.50, 3.10};
	double sum=0;
	sum = input[0] + input[1];
	for (uint i=0; i < 2; i++) 
		setInput (input);
	cout << "input[0,1] " << input[0] << " " << input[1] << " " << sum << endl;
}

setInput(double* d) {
	cout << "  *d0 " << d[0] << " " << "*d1 " << d[1] << endl;
	for (int i=0; i < _num_input; ++i)
		_input[i] = d[i];		
}

main () {
        double input[2] = {4.50, 3.10};
	double sum=0;
	sum = input[0] + input[1];
	for (uint i=0; i < 2; i++) 
		setInput (input);
	cout << "input[0,1] " << input[0] << " " << input[1] << " " << sum << endl;
}

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Output is:

*d0 4.5 *d1 3.1000000000000001 //why this '1' at the end???
input[0,1] 4.5 3.1000000000000001 7.5999999999999996

*d0 4.5 *d1 3.1000000000000001 //why this '1' at the end???
input[0,1] 4.5 3.1000000000000001 7.5999999999999996

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what's that '1' ???? why does it appear only after setInput() call??
thanks