This C programme will split one Source txt file into two equally sized text file

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
int main(void)
{
int enter=0,lines=0,count=0,flag=0;
int i=0,condition=0;
char temp='\n';
FILE *fp1;
FILE *fp2;
FILE *fp3;
fp1=fopen("exsisting.txt","a+");
fp2=fopen("splitted1.txt","w+");
fp3=fopen("splitted2.txt","w+");

i=0;


while(1)
{
    if(fscanf(fp1,"%c",&temp)==EOF)
    {
        break;
    }
    if(temp=='\n')
    {
        enter=enter+1;
    }
    count=count+1;
}

fclose(fp1);
fp1=fopen("exsisting.txt","a+");
i=0;

if(enter==0&&count==0)
{
    lines=0;
}
if(enter>0||count>0)
{
lines=(enter+1);
}

condition=(lines/2);
enter=0;
if(lines==1)
{
    enter=-1;
}


while(1)
{
    if(fscanf(fp1,"%c",&temp)==EOF)
    {
        break;
    }
    if(temp=='\n')
    {
        enter=enter+1;
    }

    if(enter<condition)
    {
        fprintf(fp2,"%c",temp);
    }
   
    if(enter==condition&&flag==0)
    {
        fscanf(fp1,"%c",&temp);
        flag=1;
    }

    if(enter>=condition)
    {
        fprintf(fp3,"%c",temp);
    }
}

if(lines==1)
{
    condition++;
}

if(count==0)
{
condition=0;
lines=0;
}

printf("The number of lines present in the source files :: %d\n",lines);
printf("The number of lines present in the First source files :: %d\n",condition);
printf("The number of lines present in the Second source files :: %d\n",(lines-condition));

fclose(fp1);
fclose(fp1);
fclose(fp1);
getch();
return 0;
}