+ progs procedure_simplest_*_input.cpp

test~coding~readingCppPrograms.fr/data/procedure_simplest_1_input.cpp

+#include<iostream>
+
+using namespace std;
+
+void saisie(int a) {
+    int b;
+    cout<<"Tapez un entier ";
+    cin >> b;
+    a = a + b;
+    cout << a;
+}
+
+int main() {
+    int a = 5;
+    saisie(a);
+    return 0;
+}

test~coding~readingCppPrograms.fr/data/procedure_simplest_2_input.cpp

+#include<iostream>
+
+using namespace std;
+
+void saisie(int &a){
+    int b;
+    cin >> b;
+    a = a + b;
+}
+
+int main() {
+    int a = 5;
+    saisie(a);
+    cout << a;
+    return 0;
+}