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  1. /*********************************************************
  2. Creator: Nishant Kumar
  3. Date : 8/1/2014
  4. Problem: SPOJ Prime Number Generator between given range.
  5. **********************************************************/
  6. #include <iostream>
  7. #include <math.h>
  8. using namespace std;
  9. int generatePrime(int, int);
  10. int main(){
  11.  
  12.   int testCase,*arrayTestCase, index = 0, testCaseLen = 0;
  13.  
  14.   // Keep test cases
  15.   cin >> testCase;
  16.  
  17.   if(testCase && testCase <= 10){
  18.     // Allocate memory for keep number of testCases
  19.     arrayTestCase = new int[testCase*2];
  20.     testCaseLen = testCase;
  21.  
  22.     // Store all range in array
  23.     while(testCaseLen){
  24.         cin >> arrayTestCase[index] >> arrayTestCase[index+1];
  25.         index += 2;
  26.         --testCaseLen;
  27.     }
  28.  
  29.     testCaseLen = testCase;
  30.     index = 0;
  31.     while(testCaseLen){
  32.         generatePrime(arrayTestCase[index], arrayTestCase[index+1]);
  33.         cout << "\n";
  34.         index = index+2;
  35.         --testCaseLen;
  36.     }
  37.  
  38.   }else{
  39.      cout << "Test case should be lesser then 10.";
  40.   }
  41.   return 0;
  42. }
  43.  
  44. // List of prime number between given range
  45. int generatePrime(int start, int end){
  46.     long int diviser, *rangeList;
  47.     int count;
  48.     if(start <= end){
  49.         while(start <= end){
  50.             count = 0;
  51.             if((start != 2 && start%2 == 0 )|| (start != 3 && start%3 == 0) || (start!= 5 && start%5 == 0 )|| (start != 7 && start%7 == 0) ){
  52.                  count = 1;
  53.             }
  54.             if(!count && start != 1){
  55.                 cout << start << "\n";
  56.             }
  57.             start++;
  58.         }
  59.     }
  60.     return 0;
  61. }
  62.  
  63.  
Success #stdin #stdout 0s 2820KB
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https://ideone.com/yOCBLd
language:
C++ 4.3.2 (gcc-4.3.2)
created:
10 years ago
visibility:
secret

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