From 78e2538813898b1dda2a32f33d142e89b1e6c3a8 Mon Sep 17 00:00:00 2001
From: Sandip <sd955902@gmail.com>
Date: Sun, 29 Mar 2026 19:56:59 +0530
Subject: [PATCH] Added Day1 to Day5 FastAPI assignments

---
 Sandip/Day3.py |  8 +++++---
 Sandip/Day5.py | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 3 deletions(-)
 create mode 100644 Sandip/Day5.py

diff --git a/Sandip/Day3.py b/Sandip/Day3.py
index bfdeb8e7..656495ee 100644
--- a/Sandip/Day3.py
+++ b/Sandip/Day3.py
@@ -3,10 +3,12 @@
 
 app = FastAPI()
 
-@app.get("/")
-def home():
-    return {"message": "Server is running"}
+# GET API
+@app.get("/greet")
+def greet(name: str):
+    return {"message": f"Hello, {name}!"}
 
+# POST API
 class User(BaseModel):
     name: str
     age: int
diff --git a/Sandip/Day5.py b/Sandip/Day5.py
new file mode 100644
index 00000000..261b4636
--- /dev/null
+++ b/Sandip/Day5.py
@@ -0,0 +1,34 @@
+from fastapi import FastAPI
+
+app = FastAPI()
+
+# Home
+@app.get("/")
+def home():
+    return {"message": "Calculator API is running"}
+
+# Add
+@app.get("/add")
+def add(a: int, b: int):
+    return {"result": a + b}
+
+# Subtract
+@app.get("/subtract")
+def subtract(a: int, b: int):
+    return {"result": a - b}
+
+# Multiply
+@app.get("/multiply")
+def multiply(a: int, b: int):
+    return {"result": a * b}
+
+# Divide
+@app.get("/divide")
+def divide(a: int, b: int):
+    if b == 0:
+        return {"error": "Cannot divide by zero"}
+    return {"result": a / b}
+
+@app.get("/square")
+def square(n: int):
+    return {"result": n * n}
\ No newline at end of file