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--- cplusplus:selection_examples [2013/02/03 02:57] – mithat
+++ cplusplus:selection_examples [2013/02/03 04:57] – mithat
@@ Line 71: / Line 71: @@
 }
 </file>
+===== validating input =====
+<file c++ validating_input_example.cpp>/* Using logical operators to validate input */
+#include <iostream>
+using namespace std;
+int main()
+{
+    int grade;
+    cout << "Enter a numerical grade, and I will tell you" << endl;
+    cout << "how well the student performed: ";
+    cin >> grade;    // read an integer
+    if (grade >= 0 && grade <=100)
+    {
+        cout << "The student received a letter grade of ";
+        if (grade >= 90 )
+            cout << "A";
+        else if (grade >= 80)
+            cout << "B";
+        else if (grade >= 70)
+            cout << "C";
+        else if (grade >= 60)
+            cout << "D";
+        else
+            cout << "F";
+        cout << "." << endl;
+    }
+    else
+        cout << "The grade must be between 0 and 100." << endl;
+    return 0;
+}</file>