def count_sentences(text):
sentence_delimiters = ['.', '!', '?']
count = 0
for char in text:
if char in sentence_delimiters:
count += 1
return count
# Example usage
text = "This is a sample text. It has multiple sentences! How many sentences does it have?"
sentence_count = count_sentences(text)
print("Number of sentences:", sentence_count)