#include<stdlib.h>
#include<stdio.h>
#include<conio.h>
void main()
{
FILE *fp;
struct air
{
char a[3];
int b;
int dop[8];
};
struct air ia;
int da=0;
fp=fopen("SC.txt","rb");
if(fp==NULL)
{
puts("Cannot open file");
exit(0);
}
printf("Enter da: ");
scanf("%d",&da);
for(i=0;i<=50;i++)
{
      while(fscanf (fp,"%s %d %d",ia.a,&ia.b,ia.dop[i]) != EOF)
     {
    if(da==ia.dop[i])
    printf("Code %s ",ia.a);
      }
}
fclose(fp);
}

#include<stdlib.h>
#include<stdio.h>
#include<string.h>
int main()
{
   FILE *fp;
   struct air
   {
    char a[50];
    int b;
    char dop[50];
   };
    struct air ia;
 
    char da = '2'; //change the variable here
 
    fp=fopen("SC.txt","rb");
    if(fp==NULL)
    {
     puts("Cannot open file");
     exit(0);
    }
 
 
 
      while(fscanf (fp,"%s %d %s",ia.a,&ia.b,ia.dop) != EOF)
      //don't use EOF for next time!!
      {
 
            int tmp = strlen(ia.dop);
            int j;
            for (j=0;j<tmp;j++)
            {
              if(da==ia.dop[j])
             {
               printf("Code %s ",ia.a);
               printf("\n");
               break; //so dat it don't repeat
             }
            }
      }
 
fclose(fp);
getchar();
return 0;
}

char da; 
 
da = getchar();

typedef struct result_
{
   int frequency;
   char* line;
} result;