Lab 2. Solutions
### Task 1. Maximum value

```
/*
Author: Alexey Nikolaev
Description: Lab 2. Task 1. Maximum value
Usage:
./a.out < file
Reads a stream of positive integers from the file
redirected to the standard input, keeping track of
the largest integer so far.
When the end of file is reached, the program outputs
the largest integer it found.
*/
#include <iostream>
using namespace std;
int main () {
int largest = 0;
int n;
while (cin >> n) {
if (n > largest) {
largest = n;
}
}
cout << largest << endl;
}
```

### Task 2. Maximum difference

```
/*
Author: Alexey Nikolaev
Description: Lab 2. Task 2. Maximum difference
Usage:
./a.out < file
Reads a stream of positive integers from the file
redirected to the standard input. Outputs the largest
absolute value of the difference betweeen any two
consecutive numbers that were read.
The program expects that the file contains at least 2 integers.
*/
#include <cstdlib>
#include <iostream>
using namespace std;
int main () {
int largest = 0;
int a;
int b;
cin >> a;
while (cin >> b) {
int diff = abs(b - a);
if (diff > largest) {
largest = diff;
}
a = b;
}
cout << largest << endl;
}
```

### Task 3. Printing a bar chart

```
/*
Author: Alexey Nikolaev
Description: Lab 2. Task 3. Bar chart
Usage:
./a.out < file
Reads a stream of positive integers from the file
redirected to the standard input.
Outputs the numbers as a bar chart printed using
the vertical bar "|" character.
*/
#include <iostream>
using namespace std;
int main () {
int n;
while (cin >> n) {
for (int i = 0; i < n; i++) {
cout << '|';
}
cout << endl;
}
}
```