# C++ Exercises: Check whether given length of three side form a right triangle

## C++ Basic: Exercise-65 with Solution

Write a C++ program to check whether a given length of three sides forms a right triangle.

**Pictorial Presentation:**

**Sample Solution**:

**C++ Code :**

```
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main() {
vector<int> triangle_sides(3);
cin >> triangle_sides[0] >> triangle_sides[1] >> triangle_sides[2];
sort(triangle_sides.begin(), triangle_sides.end());
if (triangle_sides[0]*triangle_sides[0] + triangle_sides[1]*triangle_sides[1] == triangle_sides[2]*triangle_sides[2])
{
cout << "Yes" << endl;
}
else
{
cout << "No" << endl;
}
return 0;
}
```

Sample Output:

Sample input : 6 9 7 Sample Output: No

**Flowchart: **

**C++ Code Editor:**

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**Previous:** Write a C++ program to compute the sum of the two given integers and count the number of digits of the sum value.

**Next:** Write a C++ program to add all the numbers from 1 to a given number.

**What is the difficulty level of this exercise?**

## C++ Programming: Tips of the Day

**Why is there no std::stou? **

The most pat answer would be that the C library has no corresponding "strtou", and the C++11 string functions are all just thinly veiled wrappers around the C library functions: The std::sto* functions mirror strto*, and the std::to_string functions use sprintf.

Ref: https://bit.ly/3wtz2qA

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