search incomplete

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX 100
typedef struct
{
    char fn[100];
    char ln [100];
    char no[100];
}contact;
FILE *fp;
void search(int type);
void main()
{


    int type,found;
    puts("How do you want to search?\n0 - Search by first name.\n1 - Search by last name.\n2 - Search by number.");
    do
    {
        scanf("%d",&type);
        if (type==0||type==1||type==2)
        found=search (type);
    }
    while (type>2);
}
int search(int type)
{
    fp = fopen("phonebook.txt","r");

    int flag=0,i;
    char key[100];
    if (type==0)
    {
        gets(key);
        while (!feof)
        {
            //fscanf(fp,)
        }
    }
    else if (type==1)
    {
        for (i=0;i<=3;i++)
            if (strcmp(*(cont+i),key)=0)
                found=1;
    }
    else if (type==2)
    {
        for (i=0;i<=3;i++)
            if (strcmp(*(cont+i),key)=0)
                found=1;
    }
}