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import streamlit as st
import math
st.title("Scientific Calculator")
# All operations
operations = [
"+", "-", "*", "/", "^ (power)", "% (modulus)", "// (floor division)",
"√ (square root)", "log10", "ln (natural log)", "n! (factorial)",
"sin", "cos", "tan", "exp (e^x)"
]
operation = st.selectbox("Select operation", operations)
# Input fields
num1 = st.number_input("Enter first number", format="%.4f")
# Only show num2 for operations that need two inputs
if operation in ["+", "-", "*", "/", "^ (power)", "% (modulus)", "// (floor division)"]:
num2 = st.number_input("Enter second number", format="%.4f")
else:
num2 = None
result = None
error = None
if st.button("Calculate"):
try:
if operation == "+":
result = num1 + num2
elif operation == "-":
result = num1 - num2
elif operation == "*":
result = num1 * num2
elif operation == "/":
if num2 != 0:
result = num1 / num2
else:
error = "Cannot divide by zero"
elif operation == "^ (power)":
result = num1 ** num2
elif operation == "% (modulus)":
if num2 != 0:
result = num1 % num2
else:
error = "Cannot perform modulus by zero"
elif operation == "// (floor division)":
if num2 != 0:
result = num1 // num2
else:
error = "Cannot perform floor division by zero"
elif operation == "√ (square root)":
if num1 >= 0:
result = math.sqrt(num1)
else:
error = "Cannot take square root of a negative number"
elif operation == "log10":
if num1 > 0:
result = math.log10(num1)
else:
error = "Log10 undefined for non-positive numbers"
elif operation == "ln (natural log)":
if num1 > 0:
result = math.log(num1)
else:
error = "Natural log undefined for non-positive numbers"
elif operation == "n! (factorial)":
if num1 >= 0 and num1 == int(num1):
result = math.factorial(int(num1))
else:
error = "Factorial only defined for non-negative integers"
elif operation == "sin":
result = math.sin(math.radians(num1))
elif operation == "cos":
result = math.cos(math.radians(num1))
elif operation == "tan":
result = math.tan(math.radians(num1))
elif operation == "exp (e^x)":
result = math.exp(num1)
except Exception as e:
error = str(e)
if error:
st.error(error)
else:
st.success(f"Result: {result:.6f}")
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