def main():
while (True):
print('Para salir del programa escriba -1 y enter')
string = str(input('Escriba el input\n>'))
if ('-1' in string):
print('Adios!')
break;
print(getRelationOperators(string))
print('\n\n')
def getRelationOperators(string):
tokens = list(string)
state = 0
lexeme = ''
for character in tokens:
lexeme += character
if state == 0:
if character.isdigit():
state = 1
else:
return '<Error 1>';
elif state == 1:
if character.isdigit():
state = 1
elif (character == '.'):
state = 2
elif (character.lower() == 'e'):
state = 4
else:
return '<Error 1>'
elif state == 2:
if character.isdigit():
state = 3
else:
return '<Error 1>'
elif state == 3:
if character.isdigit():
state = 3
elif (character.lower() == 'e'):
state = 4
else:
return '<Error 1>'
elif state == 4:
if (character == '+' or character == '-'):
state = 5
elif character.isdigit():
state = 6
else:
return '<Error 1>'
elif state == 5:
if character.isdigit():
state = 6
else:
return '<Error 1>'
elif state == 6:
if character.isdigit():
state = 6
if (state == 1):
return '<entero, ' + lexeme + '>'
if (state == 3):
return '<decimal, ' + lexeme + '>'
elif (state == 6):
return '<exponente, ' + lexeme + '>'
main()