#include <stdio.h>

/*
 * scanf is the function you use to read interactive input.
 *
 * While it is essentially simple to use if you know exaactly what kind
 * of input to expect, it is not easy at all to handle real-world cases
 * where the uses will very likely input the wrong data.
 *
 * E.g.: you ask a Yes/No question and ask the user to type 'Y' for Yes
 *      and 'N' for No. The user writes "yes", or "y", or "si"...
 *
 */


int main(void)
{
	int anInt;
	float aFloat;

	int result = 0;

	// scanf returns the number of conversions succesfully performed.
	// We consider our template to be applied when both numbers are
	// correctly read.

	while (result != 2) {

		printf("Inserisci un intero e un decimale: ");

		// %d matches an integer number
		// %f matches a float number (use %lf to match a double)
		// Note: scanf arguments are always _pointers_!!
		result = scanf("%d %f", &anInt, &aFloat);

		// result equals 2 if both numbers have been read
		if (result == 2) {
			printf("Hai inserito: %d e %f\n", anInt, aFloat);
			break;
		}

		// user input doesn't match the specification.
		// read and discard the user input ("*" modifier).
		// assume the input is a string for generality.
		// try removing this line, input something like
		// "2abc 5" and see what appens!!!
		scanf("%*s"); 

		printf("Lettura fallita. Per favore, riprova.\n");
	}

	return(0);
}