From 3ebe667b44aa66f2a59c6c6c74f2450554bcfbc5 Mon Sep 17 00:00:00 2001
From: Lucas <lucas.morel@epita.fr>
Date: Thu, 9 Apr 2026 15:54:30 +0200
Subject: [PATCH] calculator.c

---
 functional_market/Fundamentals/calculator.c | 31 ++++++++++++++++++---
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/functional_market/Fundamentals/calculator.c b/functional_market/Fundamentals/calculator.c
index da76ea2..60a3dfe 100644
--- a/functional_market/Fundamentals/calculator.c
+++ b/functional_market/Fundamentals/calculator.c
@@ -1,9 +1,32 @@
 #include "calculator.h"
 
+int add(int a, int b){ return a + b;}
+int sub(int a, int b){ return a - b;}
+int mul(int a, int b){return a * b;}
+int div(int a, int b){return a / b;}
+int mod(int a, int b){return a % b;}
+
+
 int calculator(int a, int b, enum operation op)
 {
-    (void)a;
-    (void)b;
-    (void)op;
-    return 0;
+    const operator lookup_table_name[] = {
+
+        [ADD] = &add,
+        [SUB] = &sub,
+        [MUL] = &mul,
+        [DIV] = &div,
+        [MOD] = &mod,
+    };
+
+    return lookup_table_name[op](a, b);
 }
+/*
+#include <stdio.h>
+int main(void)
+{
+    int a = 144;
+    int b = 10;
+    enum operation op = MOD;
+    printf("calculator(%d, %d, %d) = %d\n", a, b, op, calculator(a, b, op));
+}
+*/