From c1884ad3988959dae3f44693778471ed6dc1dd31 Mon Sep 17 00:00:00 2001
From: mc-cat-tty <44820563+mc-cat-tty@users.noreply.github.com>
Date: Thu, 21 Oct 2021 06:40:45 +0200
Subject: [PATCH] aggiunta esercizi su iterazioni

---
 .gitignore                         |   2 +-
 esercitazioni/a.out                | Bin 16848 -> 16800 bytes
 esercitazioni/div_successiva.cpp   |  13 +++++++++++++
 esercitazioni/molt_come_somma.cpp  |  22 ++++++++++++++++++++++
 esercitazioni/numero_contrario.cpp |  13 +++++++++++++
 5 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 esercitazioni/div_successiva.cpp
 create mode 100644 esercitazioni/molt_come_somma.cpp
 create mode 100644 esercitazioni/numero_contrario.cpp

diff --git a/.gitignore b/.gitignore
index 7709d37..181cc37 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
-esercutazioni/*.out
+esercitazioni/*.out
 
diff --git a/esercitazioni/a.out b/esercitazioni/a.out
index 23a4052907297b75a63f59ea25c03cdefa727496..7ebc9c098e4eca64cce92d69621d6ed14d3c1cb1 100755
GIT binary patch
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diff --git a/esercitazioni/div_successiva.cpp b/esercitazioni/div_successiva.cpp
new file mode 100644
index 0000000..ee8a06a
--- /dev/null
+++ b/esercitazioni/div_successiva.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+	int n;
+	cin >> n;
+	do {
+		cout << n << " ";
+		n /= 10;
+	} while (n>0);
+	cout << endl;
+}
diff --git a/esercitazioni/molt_come_somma.cpp b/esercitazioni/molt_come_somma.cpp
new file mode 100644
index 0000000..3928ba7
--- /dev/null
+++ b/esercitazioni/molt_come_somma.cpp
@@ -0,0 +1,22 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+	int a, b;
+	cin >> a >> b;
+	
+	int res = 0;
+	if (b<a) {  // ottimizzazione per minimizzare il numero di iterazioni
+		a += b;
+		b = a-b;
+		a -= b;
+	}
+	for (int i=0; i<a; i++) {  // prodotto come sequenza di somme di due numeri
+		res += b;
+	}
+	cout << a << " iterazioni" << endl;
+	
+	cout << a << " * " << b << " = " << res << endl;
+	return 0;
+}
diff --git a/esercitazioni/numero_contrario.cpp b/esercitazioni/numero_contrario.cpp
new file mode 100644
index 0000000..f52ec17
--- /dev/null
+++ b/esercitazioni/numero_contrario.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+	int n;
+	cin >> n;
+	while (n>0) {
+		cout << n%10;
+		n /= 10;
+	}
+	cout << endl;
+}