C++ Exercises: Check if a given number is within 2 of a multiple of 10
C++ Basic Algorithm: Exercise-41 with Solution
Write a C++ program to check if a given number is within 2 of a multiple of 10.
Sample Solution:
C++ Code :
#include <iostream>
using namespace std;
bool test(int n)
{
return n % 10 <= 2 || n % 10 >= 8;
}
int main()
{
cout << test(3) << endl;
cout << test(7) << endl;
cout << test(8) << endl;
cout << test(21) << endl;
return 0;
}
Sample Output:
0 0 1 1
Flowchart:

C++ Code Editor:
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Previous: Write a C++ program to check if a given non-negative number is a multiple of 3 or 7, but not both.
Next: Write a C++ program to compute the sum of the two given integers. If one of the given integer value is in the range 10..20 inclusive return 18.
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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