input: Write a function to convert the given temperature from Celsius to Fahrenheit. The function should take in a temperature in Celsius and return the corresponding temperature in Fahrenheit. If the input temperature is 0°C, the output should be 32°F.
  
  
  assert celsius_to_fahrenheit(0) == 32
  assert celsius_to_fahrenheit(-10) == 14
  assert celsius_to_fahrenheit(15) == 59
  assert celsius_to_fahrenheit(100) == 212
  assert celsius_to_fahrenheit(37.5) == 99.5
  
output: def celsius_to_fahrenheit(celsius):
      return celsius * 9/5 + 32