def startup():
global length1, length2
length1 = input('Enter length: ')
sf.funccheck(length1)
length2 = input('Enter length: ')
sf.funccheck(length2)
converter()
def startup():
global length1, studoc
length1 = input('Enter length: ')
sf.funccheck(length1)
studoc = input('Enter stud on center dimension: ')
sf.funccheck(studoc)
converter()
def looper():
global operator, length2
operator = input('Choose operation: ')
sf.funccheck(operator)
if operator == 'c' or operator == 'C':
print('\n')
startup()
length2 = input('Enter length: ')
sf.funccheck(length2)
converter()
def startup():
global length1, length2, length3
length1 = input('Enter length: ')
sf.funccheck(length1)
length2 = input('Enter thickness: ')
sf.funccheck(length2)
length3 = input('Enter width: ')
sf.funccheck(length3)
converter()
def startup():
global length1, length2, operator
length1 = input('Enter length: ')
sf.funccheck(length1)
operator = input('Choose operation: ')
sf.funccheck(operator)
length2 = input('Enter length: ')
sf.funccheck(length2)
converter()