C++ Program to check whether a number is a perfect number or not | C++ Program | Class XI

Write a C++ Program to check whether a number is a perfect number or not

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Write a C++ Program to check whether a number is a perfect number or not

Checking whether a number is a perfect number or not in C++ Programming Language

Code Sample 1 (for Dev C++ & CodeBlocks) 

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#include<iostream> using namespace std; int main() { int n, i=1, s=0; cout<<"Enter a number you want to check:-\t"; cin>> n; while (i<n) { if (n%i ==0) s=s+i; i++; } if (s==n) cout<<"\n\nIt is a prefect number!!"; else cout<<"\n\nIt is not a perfect number!!"; return(0); }

Code Sample 2 (for Turbo C++) 

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#include<iostream.h> #include<conio.h> void main() { clrscr(); int n, i=1, s=0; cout<<"Enter a number you want to check:-\t"; cin>> n; while (i<n) { if (n%i ==0) s=s+i; i++; } if (s==n) cout<<"\n\nIt is a prefect number!!"; else cout<<"\n\nIt is not a perfect number!!"; getch(); }

Sample Output:

Programs on control structures and string manipulations under C++ Programming language are covered here.

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Know more about stuff related to this practical experiment (Important for Boards):-

• Difference between Dev C++ and Turbo C++.
• C++ Program to find the Product of the Matrices | C++ Program | Class XI
• C++ Program to find the Sum of the Series, 1– x/2! + x^2/3! – x^3/4! + x^4/5! .... | C++ Program | Class XI
• C++ Program to find sum of each row and each column of a Matrix | C++ Program | Class XI
• Qualitative analysis for the identification of the functional group in the organic sample Acetic Acid (Example 1)
• How to find out the mass of salt required to achieve the required concentration of a solution

 Reference:-

• Arora, Sumita. Computer Science with C++ for Class - 12
• Arora, Sumita. Computer Science with C++ for Class - 11
• C programming Interview questions and answers [http://www.cquestions.com/]
• The Crazy Programmer [https://www.thecrazyprogrammer.com/]

For latest syllabus, both theory and practical papers for class XII, check out the CBSE’s official site http://cbseacademic.in/ for more info.

For more awesome coding and programs related to this language log onto http://www.thecrazyprogrammer.com or https://www.w3schools.in/.

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