Initial commit of Polytech'Marseille tutorial C exercices

* Introduce an exercice solution skeleton with a basic
  Makefile and piece of C elementary structure file.
* Preliminary work on tutorial's exercice one :
	- add void swap(int* v1, int* v2); function;
	- add void displayArray(int* array, int count) function;
        - add bool sortFirst(int* array, int length) function;
* Document a bit the usage in the README file.

Signed-off-by: Jérôme Benoit <jerome.benoit@piment-noir.org>

diff --git a/.gitignore b/.gitignore
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index 0000000..c90c33b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+*.o
+
+# editor trash
+*.swp
+*.~
+
+thumbs.db

diff --git a/README b/README
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+++ b/README
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+Introduction:
+-------------
+
+The whole purpose of the current C code is to solve the 
+Polytech'Marseille C tutorial exercices.
+
+The repositories organisation is pretty straightforward: 
+-> exo? where ? is a digit is the repository where lies the 
+solution to exercice one, and so on.
+
+Building the solutions:
+-----------------------
+
+  cd exo1 && make
+  cd exo2 && make
+  cd exo3 && make
+
+Cleaning the solutions:
+-----------------------
+
+  cd exo1 && make clean
+  cd exo2 && make clean
+  cd exo3 && make clean
+
+Running the solutions:
+----------------------
+
+  cd exo1 && ./exo1
+  cd exo2 && ./exo2
+  cd exo3 && ./exo3
+
+Exercice skeleton:
+------------------
+
+It's the directory exo_skel with a basic Makefile inside
+
+To use it:
+  cp -a exo_skel exo# where # is a digit
+  cd exo# && cp exo_skel.c exo#                    
+  edit the Makefile to change the TARGET variable to the 
+  exercice name desired

diff --git a/exo1/Makefile b/exo1/Makefile
new file mode 100644 (file)
index 0000000..b24c120
--- /dev/null
+++ b/exo1/Makefile
@@ -0,0 +1,31 @@
+TARGET = exo1
+LIBS =
+CC = gcc
+# Enforce C11 ISO standard for now
+CFLAGS = -std=c11 -g -Wall
+LDFLAGS = -g -Wall
+
+.PHONY: default all clean
+
+default: $(TARGET)
+all: default
+
+OBJECTS = $(patsubst %.c, %.o, $(wildcard *.c))
+HEADERS = $(wildcard *.h)
+
+%.o: %.c $(HEADERS)
+       $(CC) $(CFLAGS) -c $< -o $@
+
+.PRECIOUS: $(TARGET) $(OBJECTS)
+
+$(TARGET): $(OBJECTS)
+       $(CC) $(OBJECTS) $(LDFLAGS) $(LIBS) -o $@
+
+clean:
+       -rm -f $(TARGET) $(OBJECTS) 
+
+disassemble: $(TARGET)
+       objdump -d $< | less
+
+symbols: $(TARGET)
+       objdump -t $< | sort | less

diff --git a/exo1/exo1.c b/exo1/exo1.c
new file mode 100644 (file)
index 0000000..11fc1fb
--- /dev/null
+++ b/exo1/exo1.c
@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <stdbool.h>
+
+
+void promptValue(const char* msg, int* addr) {
+    puts(msg);
+    scanf("%d", addr);
+}
+
+void xorSwap (int *v1, int *v2) {
+    if (v1 != v2) {
+        *v1 ^= *v2;
+        *v2 ^= *v1;
+        *v1 ^= *v2;
+    }
+}
+
+void swap(int* v1, int* v2) {
+    int tmp = *v1;
+    if (v1 != v2) {
+        *v1 = *v2;
+        *v2 = tmp;
+    }
+}
+
+void displayArray(int* array, int count) {
+    for (int i = 0; i < count; i++) {
+        printf("Value in array index %d = %d\n", i, array[i]);
+    }
+}
+
+bool sortFirst(int* array, int length) {
+    for (int i = 0; i < length-1; i++) {
+        if (array[i] > array[i+1]) {
+            swap(&array[i], &array[i+1]);
+            return true;
+        }
+    }
+    return false;
+}
+
+int main() {
+    int array[5];
+    for (int i = 0; i < 5; i++) {
+        promptValue("Valeur ?", &array[i]);
+    }
+    displayArray(array, 5);
+
+    return 0;
+}

diff --git a/exo_skel/Makefile b/exo_skel/Makefile
new file mode 100644 (file)
index 0000000..51af164
--- /dev/null
+++ b/exo_skel/Makefile
@@ -0,0 +1,31 @@
+TARGET = exo_skel
+LIBS =
+CC = gcc
+# Enforce C11 ISO standard for now
+CFLAGS = -std=c11 -g -Wall
+LDFLAGS = -g -Wall
+
+.PHONY: default all clean
+
+default: $(TARGET)
+all: default
+
+OBJECTS = $(patsubst %.c, %.o, $(wildcard *.c))
+HEADERS = $(wildcard *.h)
+
+%.o: %.c $(HEADERS)
+       $(CC) $(CFLAGS) -c $< -o $@
+
+.PRECIOUS: $(TARGET) $(OBJECTS)
+
+$(TARGET): $(OBJECTS)
+       $(CC) $(OBJECTS) $(LDFLAGS) $(LIBS) -o $@
+
+clean:
+       -rm -f $(TARGET) $(OBJECTS) 
+
+disassemble: $(TARGET)
+       objdump -d $< | less
+
+symbols: $(TARGET)
+       objdump -t $< | sort | less

diff --git a/exo_skel/exo_skel.c b/exo_skel/exo_skel.c
new file mode 100644 (file)
index 0000000..32d1af6
--- /dev/null
+++ b/exo_skel/exo_skel.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main() {
+
+    return 0;
+}