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a guest Jun 27th, 2019 64 Never
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  1. ´´´c
  2.  
  3. #include <stdio.h>
  4. #include <math.h>
  5.  
  6. int esprimo(int n){
  7.  
  8. int p=1;          
  9.  
  10. if(n<=0){
  11.     p=-1;
  12.     return n;
  13. }
  14.  
  15. int i,div=0;          //contador para la cantidad de divisores
  16. for( i=1; i<=n; i++ ){
  17.  
  18.     if( n%i==0 ){    
  19.         div++;       //solo deberia sumar si la division tiene resto 0
  20.     }
  21.     if( div>2 ){
  22.         p=0;
  23.     }
  24. }
  25. return p;
  26. }
  27.  
  28. int main(){
  29.  
  30.     int n,p;
  31.     printf("Ingrese un numero positivo: ");
  32.     scanf("i%", &n);
  33.  
  34.     p = esprimo(n);
  35.  
  36.     if(p==0){
  37.         printf("No es primo");
  38.     }
  39.     else if(p==1){
  40.         printf("Es primo");
  41.     }
  42.     else if(p==-1){
  43.         printf("Numero no valido");
  44.     }
  45.  
  46.     return 0;
  47. }
  48.  
  49. ´´´
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