program to implement absolute loader

//program to implement absolute loader
#include< stdio.h >
#include< conio.h >
#include< string.h >
char input[10],label[10],ch1,ch2;
int addr,w=0,start,ptaddr,l,length=0,end,count=0,k,taddr,address,i=0;
FILE *fp1,*fp2;
void check();
void main()
{
clrscr();
fp1=fopen("INPUT.dat","r");
fp2=fopen("OUTPUT.dat","w");
fscanf(fp1,"%s",input);
printf("\n\n\t\t\t\tABSOLUTE LOADER\n");
fprintf(fp2,"\n------------------\n");
fprintf(fp2,"MEMORY ADDRESS\t\t\tCONTENTS");
fprintf(fp2,"\n------------------------\n");
while(strcmp(input,"E")!=0)
{
if(strcmp(input,"H")==0)
{
fscanf(fp1,"%s %x %x %s",label,&start,&end,input);
address=start;
}
else if(strcmp(input,"T")==0)
{
l=length;
ptaddr=addr;
fscanf(fp1,"%x %x %s",&taddr,&length,input);
addr=taddr;
if(w==0)
{
ptaddr=address;
w=1;
}
for(k=0;k<(taddr-(ptaddr+l));k++)
{
address=address+1;
fprintf(fp2,"xx");
count++;
if(count==4)
{
fprintf(fp2," ");
i++;
if(i==4)
{
fprintf(fp2,"\n\n%x\t\t",address);
i=0;
}
count=0;
}
}
if(taddr==start)
fprintf(fp2,"\n\n%x\t\t",taddr);
fprintf(fp2,"%c%c",input[0],input[1]);
check();
fprintf(fp2,"%c%c",input[2],input[3]);
check();
fprintf(fp2,"%c%c",input[4],input[5]);
check();
fscanf(fp1,"%s",input);
}
else
{
fprintf(fp2,"%c%c",input[0],input[1]);
check();
fprintf(fp2,"%c%c",input[2],input[3]);
check();
fprintf(fp2,"%c%c",input[4],input[5]);
check();
fscanf(fp1,"%s",input);
}
}
fprintf(fp2,"\n------------------\n");
fcloseall();
printf("\n\n The contents of output file:\n\n");
fp2=fopen("OUTPUT.DAT","r");
ch2=fgetc(fp2);
while(ch2!=EOF)
{
printf("%c",ch2);
ch2=fgetc(fp2);
}
fcloseall();
getch();
}
void check()
{
count++;
address++;
taddr=taddr+1;
if(count==4)
{
fprintf(fp2," ");
i++;
if(i==4)
{
fprintf(fp2,"\n\n%x\t\t",taddr);
i=0;
}
count=0;
}
}



















INPUT FILE

H COPY 001000 00107A
T 001000 1E 141033 482039 001036 281030 301015 482061 3C1003 00102A 0C1039 00102D
T 00101E 15 0C1036 482061 081033 4C0000 454F46 000003 000000
T 001047 1E 041030 001030 E0205D 30203F D8205D 281030 302057 549039 2C205E 38203F
T 001077 1C 101036 4C0000 000000 001000 041030 E02079 302064 509039 DC2079 2C1036
E 001000

--------------------------------------------output----------------------------------------------

ABSOLUTE LOADER


The contents of output file:


------------------
MEMORY ADDRESS CONTENTS
------------------------


1000 14103348 20390010 36281030 30101548

S1010 20613C10 0300102A 0C103900 102D0C10

1020 36482061 0810334C 0000454F 46000003

1030 000000xx xxxxxxxx xxxxxxxx xxxxxxxx

1040 xxxxxxxx xxxxxx04 10300010 30E0205D

1050 30203FD8 205D2810 30302057 5490392C

1060 205E3820 3Fxxxxxx xxxxxxxx xxxxxxxx

1070 xxxxxxxx xxxxxx10 10364C00 00000000

1080 00100004 1030E020 79302064 509039DC

1090 20792C10 36