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- #include<stdio.h>
- int main ()
- {
- int i,n,a=0;
- scanf("%d",&n);
- for(i=1;i<=n;i++){
- if(n%i==0){
- a++;
- }
- }
- if(a==2){
- printf("%d :prime number",i);
- }
- else{
- printf("%d :not prime number",i);
- }
- return 0;
- }
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