#include<stdio.h>
#include<stdlib.h>
typedef struct myType{
        char sname[20];
        char name[20];
        double old;       
        char doc[20];    
        char ill;
}table;   
int main(){
int i,j,a,b,k;
double big=0;
printf("Please give the number of data records:\n");
scanf("%d",&a);
table table1[a];
printf("Please give %d patient records in the form:\n",a);
printf("sname---name---y.o.b.---doc---ill:\n");
for (i=0;i<a;i++){
scanf("%s %s %lf %s %s",
  &table1[i].sname,  
  &table1[i].name,  
  &table1[i].old,   
  &table1[i].doc,
  &table1[i].ill
  );}
printf("Please give a sort order code according to menu:\n");
printf("          Surname ascending        : 1\n");
printf("          Doctor ascending         : 2\n");
printf("          Year-of-birth descending : 3\n");
scanf("%d",&b);
while(b<=3){
switch(b){
//Surname ascending
case 1 : 
break;
//Doctor ascending
case 2 : 
break;
//Year-of-birth descending 
case 3 :
for(k=0;k<a;k++){
if(table1[k].old>=big)
big=table1[k].old;
}
break;}}
if(b>3){
printf("Just enter 1,2 or 3\n");}
 
 
 
system("PAUSE");
return 0;
}