C++ Exercises: Display the operation of pre and post increment and decrement
C++ Basic: Exercise-9 with Solution
Write a program in C++ to display the operation of pre and post increment and decrement.
Sample Solution:
C++ Code :
#include <iostream>
using namespace std;
int main()
{
int num = 57;
cout << "\n\n Display the operation of pre and post increment and decrement :\n";
cout << "--------------------------------------------------------------------\n";
cout <<" The number is : " << num << endl;
num++; // increase by 1 (post-increment)
cout <<" After post increment by 1 the number is : " << num << endl;
++num; // increase by 1 (pre-increment)
cout <<" After pre increment by 1 the number is : " << num << endl;
num = num + 1; // num is now increased by 1.
cout <<" After increasing by 1 the number is : " << num << endl; // 79
num--; // decrease by 1 (post-decrement)
cout <<" After post decrement by 1 the number is : " << num << endl;
--num; // decrease by 1 (pre-decrement)
cout <<" After pre decrement by 1 the number is : " << num << endl;
num = num - 1; // num is now decreased by 1.
cout <<" After decreasing by 1 the number is : " << num << endl;
cout << endl;
return 0;
}
Sample Output:
Display the operation of pre and post increment and decrement : -------------------------------------------------------------------- The number is : 57 After post increment by 1 the number is : 58 After pre increment by 1 the number is : 59 After increasing by 1 the number is : 60 After post decrement by 1 the number is : 59 After pre decrement by 1 the number is : 58 After decreasing by 1 the number is : 57
Flowchart:
C++ Code Editor:
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