C++ Exercises: Accept two integers and return true if either one is 5 or their sum or difference is 5
C++ Basic Algorithm: Exercise-38 with Solution
Write a C++ program that accepts two integers and returns true if either one is 5 or their sum or difference is 5.
Sample Solution:
C++ Code :
#include <iostream>
using namespace std;
bool test(int x, int y)
{
return x == 5 || y == 5 || x + y == 5 || abs(x - y) == 5;
}
int main()
{
cout << test(5, 4) << endl;
cout << test(4, 3) << endl;
cout << test(1, 4) << endl;
return 0;
}
Sample Output:
1 0 1
Pictorial Presentation:

Flowchart:

C++ Code Editor:
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Previous: Write a C++ program to compute the sum of the two given integers. If the sum is in the range 10..20 inclusive return 30.
Next: Write a C++ program to test if a given non-negative number is a multiple of 13 or it is one more than a multiple of 13.
What is the difficulty level of this exercise?
C++ Programming: Tips of the Day
Why does the C++ map type argument require an empty constructor when using []?
This issue comes with operator[]. Quote from SGI documentation:
data_type&operator[](constkey_type& k) - Returns a reference to the object that is associated with a particular key. If the map does not already contain such an object, operator[] inserts the default object data_type().
If you don't have default constructor you can use insert/find functions. Following example works fine:
myMap.insert(std::map<int, MyClass>::value_type ( 1, MyClass(1) ) ); myMap.find( 1 )->second;
Ref: https://bit.ly/3PQBRJi
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