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Source Code in C

   1:  Linear Search
   2:  #include <stdio.h>
   3:  #include <stdlib.h>
   4:   
   5:  void seiriaki_anazitisi(int pinakas[],int megethos,int arithmos,int *plithos_sygriseon
   6:                                 ,int *thesi_pinaka,int *vrethike);
   7:   
   8:  int main()
   9:  {
  10:   int n;
  11:   int vrethike;
  12:   int plithos;
  13:   int thesi;
  14:   int k;
  15:   int i;
  16:   int *x;
  17:   printf(“dose to megethos tou pinaka:”);
  18:   scanf(“%d”,&n);
  19:   x=(int*)malloc(n*sizeof(int));
  20:   printf(“dose ta stoixeia tou taksinomimenou pinaka:\n”);
  21:   i=0;
  22:   while(i<n)
  23:   {
  24:    printf(“x[%d]=”,i);
  25:    scanf(“%d”,&x[i]);
  26:    i++;
  27:   }
  28:   printf(“dose enan arithmo:”);
  29:   scanf(“%d”,&k);
  30:   plithos=0;
  31:   thesi=0;
  32:   seiriaki_anazitisi(x,n,k,&plithos,&thesi,&vrethike);
  33:   if(vrethike!=0)
  34:     {
  35:       printf(“o arithmos yparxei ston pinaka”);
  36:       printf(“\no arithmos yparxei stin thesi %d”,thesi);
  37:       printf(“\nto plithos sygriseon pou eginan einai:%d”,plithos);
  38:     }
  39:   else
  40:    if(vrethike==0)
  41:    {
  42:     printf(“o arithmos den yparxei”);
  43:     printf(“\nto plithos sygriseon pou eginan einai:%d”,plithos);
  44:    }
  45:   
  46:   return 0;
  47:  } 
  48:   
  49:   
  50:  void seiriaki_anazitisi(int pinakas[],int megethos,int arithmos,int *plithos_sygriseon
  51:                                 ,int *thesi_pinaka,int *vrethike)
  52:  {
  53:    int i;
  54:    *vrethike=0;   /*Den exei brethei o arithmos*/
  55:    *plithos_sygriseon=0;
  56:    *thesi_pinaka=-1;
  57:    for(i=0;i<megethos;i++)
  58:    {
  59:      (*plithos_sygriseon)++;
  60:      if(arithmos<pinakas[i]) /*Den yparxei o arithmos ston pinaka*/
  61:        break;
  62:      else
  63:      {
  64:        if(arithmos==pinakas[i])
  65:        {
  66:          *thesi_pinaka=i;
  67:          *vrethike=1;
  68:          break;
  69:        }
  70:      }
  71:    }
  72:  }           
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