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  1. #include<stdio.h>
  2.  
  3. int primeckr(int num)
  4. {
  5.     int prime=1;
  6.     for(int i=2;i<num;i++)
  7.     {
  8.         if(num%i==0){prime=0; break;}
  9.     }
  10. return prime;}
  11. int main()
  12. {
  13.     int n1,n2;
  14.     printf("Enter n1: "); scanf("%d",&n1);
  15.     printf("Enter n2: "); scanf("%d",&n2);
  16.     printf("Prime: ");
  17.     for(int i=n1; i<=n2; i++)
  18.     {
  19.         if(primeckr(i)==1){printf("%d ",i);}
  20.     }
  21.  
  22. return 0;}
Success #stdin #stdout 0s 5316KB
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stdin
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Standard input is empty
stdout
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Enter n1: Enter n2: Prime:
https://ideone.com/aNmekM
language:
C (gcc 8.3)
created:
3 hours ago
visibility:
public

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