An offer has been given. Count the number of "n" letters preceding the first comma of the sentence.
Solve the problem
without using the built-in string functions, except for a function that returns the length of a string.
Input: The first line is the original sentence.
Output:
Sample input and output
| Test number |
Input |
Output |
| 1 |
fore, sete. |
0 |
| 2 |
hanah. |
1 |
Запрещенные операторы:find;count