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authorMichael Abed <michaelabed@gmail.com>2012-02-12 15:42:43 -0500
committerMichael Abed <michaelabed@gmail.com>2012-02-12 15:42:43 -0500
commit042acb10595161ac36b47768f7c1e58c553e6b33 (patch)
tree469bfa7f6ce25a4580169bc5c18a9de70d217970
parent986e3aa56c96097bb6993e48859ea6540e9ad7cc (diff)
downloadec327-lab1-042acb10595161ac36b47768f7c1e58c553e6b33.tar.gz
ec327-lab1-042acb10595161ac36b47768f7c1e58c553e6b33.tar.bz2
ec327-lab1-042acb10595161ac36b47768f7c1e58c553e6b33.zip
solve problem 4HEADmaster
-rw-r--r--Makefile5
-rw-r--r--Q4.cpp49
2 files changed, 53 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index cce7ed3..1a7e44c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
-all: Q1 Q2 Q3
+all: Q1 Q2 Q3 Q4
Q1: Q1.cpp
g++ -o Q1 Q1.cpp
@@ -10,5 +10,8 @@ Q2: Q2.cpp
Q3: Q3.cpp
g++ -o Q3 Q3.cpp
+Q4: Q4.cpp
+ g++ -o Q4 Q4.cpp
+
clean:
rm Q1 Q2 Q3
diff --git a/Q4.cpp b/Q4.cpp
index e69de29..0a14cad 100644
--- a/Q4.cpp
+++ b/Q4.cpp
@@ -0,0 +1,49 @@
+/*
+ * Michael Abed <mgabed@bu.edu>
+ *
+ * Lab 1 Problem 4
+ *
+ * Convert a letter based on an offset.
+ */
+
+#include <iostream>
+
+using namespace std;
+
+int main()
+{
+
+ char input;
+ int offset;
+ int caseswap = 'a' - 'A';
+
+ cout << "Enter character: ";
+ cin >> input; // any character will do
+
+ do { // validate input
+ cout << "Offset (enter 0 to convert case): ";
+ cin >> offset;
+ if (offset < 0)
+ cout << "Offset must be positive" << endl;
+ if (offset >= 128)
+ cout << "Offset must be less than 128" << endl;
+ } while (offset < 0 || offset >= 128);
+
+ char knew;
+ // calculate new character
+ if (offset == 0 && input >= 'A' && input <= 'Z')
+ knew = input + caseswap;
+ else if (offset == 0 && input >= 'a' && input <= 'z')
+ knew = input - caseswap;
+ else if (offset == 0)
+ knew = input;
+ else
+ knew = input + offset;
+
+ if (input + offset > '~' ) // larger is non printing
+ cout << "Result outside of ASCII range" << endl;
+ else
+ cout << "New character: " << knew << endl;
+
+ return 0;
+}