# count_hi



**Requirements:**
```eval_rst
- :ref:`fundamentals:substrings and slicing`
- :ref:`fundamentals:loop through a string (while)`
- :ref:`fundamentals:loop with an accumulator variable`

```


Return the number of times that the string "hi" appears anywhere in the given string.

This exercise was taken from [codingbat.com](https://codingbat.com/prob/p147448) and has been adapted for the Python language. There are many great programming exercises there, but the majority are created for Java.






### Test 1
**Input:**
```
'abc hi ho'
```
**Output:**
```
1
```
### Test 2
**Input:**
```
'ABChi hi'
```
**Output:**
```
2
```
### Test 3
**Input:**
```
'hihi'
```
**Output:**
```
2
```
### Test 4
**Input:**
```
'hiHIhi'
```
**Output:**
```
2
```
### Test 5
**Input:**
```
''
```
**Output:**
```
0
```
### Test 6
**Input:**
```
'h'
```
**Output:**
```
0
```
### Test 7
**Input:**
```
'hi'
```
**Output:**
```
1
```
### Test 8
**Input:**
```
'Hi is no HI on ahI'
```
**Output:**
```
0
```
### Test 9
**Input:**
```
'hiho not HOHIhi'
```
**Output:**
```
2
```