# C++ Exercises: Calculate the volume of a sphere

## C++ Basic: Exercise-14 with Solution

Write a C++ program that calculates the volume of a sphere.

**Pictorial Presentation:**

**Sample Solution**:

**C++ Code :**

```
#include <iostream>
using namespace std;
int main()
{
int rad1;
float volsp;
cout << "\n\n Calculate the volume of a sphere :\n";
cout << "---------------------------------------\n";
cout<<" Input the radius of a sphere : ";
cin>>rad1;
volsp=(4*3.14*rad1*rad1*rad1)/3;
cout<<" The volume of a sphere is : "<< volsp << endl;
cout << endl;
return 0;
}
```

Sample Output:

Calculate the volume of a sphere : --------------------------------------- Input the radius of a sphere : 6 The volume of a sphere is : 904.32

**Flowchart: **

**C++ Code Editor:**

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**Next:** Write a program in C++ to calculate the volume of a cube.

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## 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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