Add TP_4

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

diff --git a/TP_4/Makefile b/TP_4/Makefile
new file mode 100644 (file)
index 0000000..84437e8
--- /dev/null
+++ b/TP_4/Makefile
@@ -0,0 +1,79 @@
+# Sample Makefile to build simple project.
+#
+# This Makefile expect all source files (.c) to be at the same level, in the
+# current working directory.
+#
+# It will automatically generate dependencies, compile all files, and produce a
+# binary using the provided name.
+#
+# Set BINARY_NAME to the name of the binary file to build.
+# Set BUILD_TYPE to either debug or release
+#
+# Automatic dependencies code from:
+# http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr
+BINARY_NAME=tp4
+BUILD_TYPE=debug
+
+# ====================================
+# DO NOT CHANGE STUFF BEYOND THIS LINE
+# ====================================
+
+all: $(BINARY_NAME)
+
+CC=gcc
+LD=gcc
+
+WARN_FLAGS = -Wall -Wextra
+STD_FLAG = -std=c11
+
+ifeq ($(BUILD_TYPE),debug)
+BUILDDIR := .build/debug
+DEBUG_FLAG = -g
+STRIP_FLAG =
+OPTI_FLAG = -O0
+else
+BUILDDIR := .build/release
+DEBUG_FLAG =
+STRIP_FLAG = -s
+OPTI_FLAG = -O3
+endif
+
+CFLAGS := $(CFLAGS) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG)
+LDFLAGS := $(LDFLAGS) $(STRIP_FLAG)
+
+OBJDIR := $(BUILDDIR)/objs
+$(shell mkdir -p $(OBJDIR))
+
+SRCS=$(wildcard *.c)
+OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(SRCS))
+
+DEPDIR := $(BUILDDIR)/deps
+$(shell mkdir -p $(DEPDIR))
+DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$*.Td
+POSTCOMPILE = mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d
+
+$(BINARY_NAME): $(OBJS)
+       @echo "[LD ] $@"
+       @$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
+
+$(OBJDIR)/%.o: %.c $(DEPDIR)/%.d
+       @echo "[C  ] $*"
+       @$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@
+       @$(POSTCOMPILE)
+
+$(DEPDIR)/%.d: ;
+
+.PRECIOUS: $(DEPDIR)/%.d
+
+include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS))))
+
+clean:
+       @echo "[CLN]"
+       -@rm -r $(BUILDDIR)
+       -@rm $(BINARY_NAME)
+
+disassemble: $(BINARY_NAME)
+       objdump -d $< | less
+
+symbols: $(BINARY_NAME)
+       objdump -t $< | sort | less

diff --git a/TP_4/tp4.c b/TP_4/tp4.c
new file mode 100644 (file)
index 0000000..37166eb
--- /dev/null
+++ b/TP_4/tp4.c
@@ -0,0 +1,136 @@
+#include <stdio.h>
+
+void displayMenuEntry(int num, const char* option) {
+    printf("%d - %s\n", num, option);
+}
+
+void displayMenu() {
+    displayMenuEntry(1, "Addition");
+    displayMenuEntry(2, "Soustraction");
+    displayMenuEntry(3, "Multiplication");
+    displayMenuEntry(4, "Division");
+    displayMenuEntry(5, "Puissance");
+    displayMenuEntry(6, "Quitter");
+}
+
+int prompt(const char* msg) {
+    puts(msg);
+    int value;
+    scanf("%d", &value);
+    return value;
+}
+
+int promptUserChoice() {
+    int choice;
+    displayMenu();
+    return choice = prompt("Veuillez saisir un choix d'operation ?");
+}
+
+int doAddition(int val1, int val2) {
+    return val1 + val2;
+}
+
+int doSubstraction(int val1, int val2) {
+    return val1 - val2; 
+}
+
+int doMultiplication(int val1, int val2) {
+    return val1 * val2;
+}
+
+int doDivision(int val1, int val2) {
+    if (val2 == 0) {
+        printf("Division par zero !\n");
+        //FIXME: I'm not very fond of this convention ...
+        return 0;
+    } else {
+        return val1 / val2;
+    }
+}
+
+int doPuissance(int base, int expo) {
+    int power = 1;
+    for (int iter = 0; iter < expo; iter++) {
+       power *= base ; 
+    }
+    return power;
+}
+
+int doPuissanceSmart(int base, int expo) {
+    int power;
+    if (expo == 1) {
+        power = base;              
+    } else if (expo % 2 == 0) {
+       power = doPuissanceSmart(base*base, expo/2);    
+    } else {
+        power = base*doPuissanceSmart(base*base,(expo-1)/2);
+    }
+    return power;
+}
+
+int doPuissanceSmartIter(int base, int expo) {
+    int power = 1;
+    while (expo > 1) {
+        if (expo % 2 == 0) {
+            expo /= 2;
+        } else {
+           power *= base;
+           expo = (expo - 1) / 2;
+        }
+       base *= base;
+    }
+    return power * base;
+}
+
+int doOperation(int selection, int val1, int val2) {
+    int op_result;
+    switch (selection) {
+        case 1:
+            op_result = doAddition(val1, val2);           
+            break;
+        case 2:
+            op_result = doSubstraction(val1, val2);           
+            break;
+        case 3:
+            op_result = doMultiplication(val1, val2);           
+            break;
+        case 4:
+            op_result = doDivision(val1, val2);           
+            break;
+        case 5:
+            op_result = doPuissanceSmartIter(val1, val2);
+            break;
+        case 6:
+            break;
+        default:
+            puts("Faire un choix entre 1 et 6");
+    }
+    return op_result;
+}
+
+/* int promptValue(const char* invite) {
+    int input;
+    return input = prompt(invite);
+} */
+
+void promptValue(const char* invite, int* value) {
+    puts(invite);    
+    scanf("%d", value);
+}
+
+void promptBothValues(int* val1, int* val2) {
+    promptValue("Veuillez saisir la premiere valeur", val1);
+    promptValue("Veuillez saisir la deuxieme valeur", val2);
+}
+
+int main() {
+    int choiceresult, value1, value2, result;
+    for (;;) {
+        choiceresult = promptUserChoice();
+        if (choiceresult == 6) break;      
+       promptBothValues(&value1, &value2);
+        result = doOperation(choiceresult, value1, value2);
+       printf("Le resultat est %d\n", result);
+       printf("\n");
+    }
+}