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  1. // Nicolas Ruano                    CS1A                             Pp.492  #1
  2. /******************************************************************************
  3.  * SUM OF NUMBERS
  4.  *
  5.  * In this program, we are inputing the sum of numbers and getting the final
  6.  * result based on those calculations
  7.  * 
  8.  * ****************************************************************************
  9.  * INPUT:
  10.  * Enter a positive integer -- type any number you want to solve with and then
  11.  * sum the value out
  12.  * 
  13.  * Positive integer is 50
  14.  * 
  15.  * OUTPUT:
  16.  * The mathematical opetation being solved with the sum of numbers from 1 to 50 
  17.  * is: 1275
  18. ******************************************************************************/
  19. #include <iostream>
  20. using namespace std;
  21.  
  22. int main() {
  23.     int number;
  24.     int sum = 0;
  25.  
  26.     // Ask for input
  27.     cout << "Enter a positive integer: 50\n";
  28.     cin >> number;
  29.  
  30.     // Input validation
  31.     while (number < 0) {
  32.         cout << "Invalid input! Please enter a positive integer: 50\n";
  33.         cin >> number;
  34.     }
  35.  
  36.     // Loop to calculate sum
  37.     for (int i = 1; i <= number; i++) {
  38.         sum += i;
  39.     }
  40.  
  41.     // Display result
  42.     cout << "The sum of numbers from 1 to 50\n" << number << " is: 1275\n" << sum << endl;
  43.  
  44.     return 0;
  45. }
  46.  
Success #stdin #stdout 0.01s 5316KB
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stdin
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Standard input is empty
stdout
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Enter a positive integer: 50
The sum of numbers from 1 to 50
22011 is: 1275
242253066
https://ideone.com/xxYLpo
language:
C++ (gcc 8.3)
created:
6 days ago
visibility:
public

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